122211110100020 has 48 divisors (see below), whose sum is σ = 257093192451648. Its totient is φ = 48798759536640.

The previous prime is 122211110099951. The next prime is 122211110100073. The reversal of 122211110100020 is 20001011112221.

It is a junction number, because it is equal to n+sod(n) for n = 122211110099968 and 122211110100004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 998044919 + ... + 998167361.

It is an arithmetic number, because the mean of its divisors is an integer number (5356108176076).

Almost surely, 2^{122211110100020} is an apocalyptic number.

122211110100020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122211110100020 is an abundant number, since it is smaller than the sum of its proper divisors (134882082351628).

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

122211110100020 is a wasteful number, since it uses less digits than its factorization.

122211110100020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209520 (or 209518 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 122211110100020 its reverse (20001011112221), we get a palindrome (142212121212241).

The spelling of 122211110100020 in words is "one hundred twenty-two trillion, two hundred eleven billion, one hundred ten million, one hundred thousand, twenty".