121022220010100 has 18 divisors (see below), whose sum is σ = 262618217422134. Its totient is φ = 48408888004000.

The previous prime is 121022220010079. The next prime is 121022220010177. The reversal of 121022220010100 is 1010022220121.

It can be written as a sum of positive squares in 3 ways, for example, as 581735696656 + 120440484313444 = 762716^2 + 10974538^2 .

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 605111099951 + ... + 605111100150.

Almost surely, 2^{121022220010100} is an apocalyptic number.

121022220010100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121022220010100 is an abundant number, since it is smaller than the sum of its proper divisors (141595997412034).

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

121022220010100 is a wasteful number, since it uses less digits than its factorization.

121022220010100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1210222200115 (or 1210222200108 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 121022220010100 its reverse (1010022220121), we get a palindrome (122032242230221).

The spelling of 121022220010100 in words is "one hundred twenty-one trillion, twenty-two billion, two hundred twenty million, ten thousand, one hundred".