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122002220 = 2256100111
BaseRepresentation
bin1110100010110…
…01101100101100
322111120100120202
413101121230230
5222213032340
620034533032
73011000414
oct721315454
9274510522
10122002220
116295a08a
1234a37178
131c378382
14122bb644
15aa9dc15
hex7459b2c

122002220 has 12 divisors (see below), whose sum is σ = 256204704. Its totient is φ = 48800880.

The previous prime is 122002219. The next prime is 122002229. The reversal of 122002220 is 22200221.

It is not an unprimeable number, because it can be changed into a prime (122002229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3050036 + ... + 3050075.

It is an arithmetic number, because the mean of its divisors is an integer number (21350392).

Almost surely, 2122002220 is an apocalyptic number.

122002220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122002220 is an abundant number, since it is smaller than the sum of its proper divisors (134202484).

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

122002220 is a wasteful number, since it uses less digits than its factorization.

122002220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6100120 (or 6100118 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 122002220 is about 11045.4615114082. The cubic root of 122002220 is about 495.9705746938.

Adding to 122002220 its reverse (22200221), we get a palindrome (144202441).

The spelling of 122002220 in words is "one hundred twenty-two million, two thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 6100111 12200222 24400444 30500555 61001110 122002220