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122010012220 = 225231791481783
BaseRepresentation
bin111000110100001011…
…1010000101000111100
3102122221002100210220111
41301220113100220330
53444334030342340
6132014533555404
711546343664225
oct1615027205074
9378832323814
10122010012220
1147820520048
121b790aa5b64
13b675758a05
145c9628a24c
153291694aea
hex1c685d0a3c

122010012220 has 48 divisors (see below), whose sum is σ = 268854888960. Its totient is φ = 46421266496.

The previous prime is 122010012211. The next prime is 122010012221. The reversal of 122010012220 is 22210010221.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 122010012220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122010012221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 658552 + ... + 823231.

It is an arithmetic number, because the mean of its divisors is an integer number (5601143520).

Almost surely, 2122010012220 is an apocalyptic number.

122010012220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122010012220 is an abundant number, since it is smaller than the sum of its proper divisors (146844876740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122010012220 is a wasteful number, since it uses less digits than its factorization.

122010012220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1481994 (or 1481992 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 122010012220 its reverse (22210010221), we get a palindrome (144220022441).

The spelling of 122010012220 in words is "one hundred twenty-two billion, ten million, twelve thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 23 46 92 115 179 230 358 460 716 895 1790 3580 4117 8234 16468 20585 41170 82340 1481783 2963566 5927132 7408915 14817830 29635660 34081009 68162018 136324036 170405045 265239157 340810090 530478314 681620180 1060956628 1326195785 2652391570 5304783140 6100500611 12201001222 24402002444 30502503055 61005006110 122010012220