121110010010021 has 16 divisors (see below), whose sum is σ = 127892132659200. Its totient is φ = 114369017415408.

The previous prime is 121110010009993. The next prime is 121110010010089. The reversal of 121110010010021 is 120010010011121.

It is not a de Polignac number, because 121110010010021 - 2⁶ = 121110010009957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121110010009984 and 121110010010011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121110010010921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8162396 + ... + 17573978.

It is an arithmetic number, because the mean of its divisors is an integer number (7993258291200).

Almost surely, 2^{121110010010021} is an apocalyptic number.

It is an amenable number.

121110010010021 is a deficient number, since it is larger than the sum of its proper divisors (6782122649179).

121110010010021 is a wasteful number, since it uses less digits than its factorization.

121110010010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9413768.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 121110010010021 its reverse (120010010011121), we get a palindrome (241120020021142).

The spelling of 121110010010021 in words is "one hundred twenty-one trillion, one hundred ten billion, ten million, ten thousand, twenty-one".