122100111020 has 24 divisors (see below), whose sum is σ = 256500733104. Its totient is φ = 48822806336.

The previous prime is 122100111011. The next prime is 122100111047. The reversal of 122100111020 is 20111001221.

It is a super-2 number, since 2×122100111020² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 122100110992 and 122100111010.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1019222 + ... + 1132701.

It is an arithmetic number, because the mean of its divisors is an integer number (10687530546).

Almost surely, 2^122100111020 is an apocalyptic number.

122100111020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122100111020 is an abundant number, since it is smaller than the sum of its proper divisors (134400622084).

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

122100111020 is a wasteful number, since it uses less digits than its factorization.

122100111020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2154769 (or 2154767 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 122100111020 its reverse (20111001221), we get a palindrome (142211112241).

The spelling of 122100111020 in words is "one hundred twenty-two billion, one hundred million, one hundred eleven thousand, twenty".