122020111220100 has 72 divisors (see below), whose sum is σ = 353045964445440. Its totient is φ = 32538594084480.

The previous prime is 122020111220099. The next prime is 122020111220123. The reversal of 122020111220100 is 1022111020221.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 122020111220100.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 179381229 + ... + 180060171.

Almost surely, 2^{122020111220100} is an apocalyptic number.

122020111220100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122020111220100 is an abundant number, since it is smaller than the sum of its proper divisors (231025853225340).

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

122020111220100 is a wasteful number, since it uses less digits than its factorization.

122020111220100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1278029 (or 1278022 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 122020111220100 its reverse (1022111020221), we get a palindrome (123042222240321).

The spelling of 122020111220100 in words is "one hundred twenty-two trillion, twenty billion, one hundred eleven million, two hundred twenty thousand, one hundred".