122021012121100 has 72 divisors (see below), whose sum is σ = 265518024109520. Its totient is φ = 48673575578880.

The previous prime is 122021012121089. The next prime is 122021012121181. The reversal of 122021012121100 is 1121210120221.

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, 53000746 + ... + 55255054.

Almost surely, 2^{122021012121100} is an apocalyptic number.

122021012121100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122021012121100 is an abundant number, since it is smaller than the sum of its proper divisors (143497011988420).

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

122021012121100 is a wasteful number, since it uses less digits than its factorization.

122021012121100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2255819 (or 2255812 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 122021012121100 its reverse (1121210120221), we get a palindrome (123142222241321).

The spelling of 122021012121100 in words is "one hundred twenty-two trillion, twenty-one billion, twelve million, one hundred twenty-one thousand, one hundred".