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BaseRepresentation
bin1001001001101000010101…
…01000101100100010101000
32122020122122202120110021122
410210310022220230202220
510114140030124101440
6110443544253354412
74144526254544561
oct444641250544250
978218582513248
1020122100222120
116458809aa2116
12230b96a798a08
13b2c676636090
144d7cb44ab168
1524d64e3e97b5
hex124d0aa2c8a8

20122100222120 has 128 divisors (see below), whose sum is σ = 49970758602240. Its totient is φ = 7245922590720.

The previous prime is 20122100222069. The next prime is 20122100222137. The reversal of 20122100222120 is 2122200122102.

It is a happy number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 5461880 + ... + 8371160.

It is an arithmetic number, because the mean of its divisors is an integer number (390396551580).

Almost surely, 220122100222120 is an apocalyptic number.

20122100222120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20122100222120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24985379301120).

20122100222120 is an abundant number, since it is smaller than the sum of its proper divisors (29848658380120).

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

20122100222120 is a wasteful number, since it uses less digits than its factorization.

20122100222120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2909635 (or 2909631 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20122100222120 its reverse (2122200122102), we get a palindrome (22244300344222).

The spelling of 20122100222120 in words is "twenty trillion, one hundred twenty-two billion, one hundred million, two hundred twenty-two thousand, one hundred twenty".