121010113021 has 16 divisors (see below), whose sum is σ = 138562099200. Its totient is φ = 103524528240.

The previous prime is 121010113009. The next prime is 121010113039. The reversal of 121010113021 is 120311010121.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-121010113021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121010112992 and 121010113010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121010116021) 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, 8679426 + ... + 8693356.

It is an arithmetic number, because the mean of its divisors is an integer number (8660131200).

Almost surely, 2^121010113021 is an apocalyptic number.

It is an amenable number.

121010113021 is a deficient number, since it is larger than the sum of its proper divisors (17551986179).

121010113021 is a wasteful number, since it uses less digits than its factorization.

121010113021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16224.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 121010113021 its reverse (120311010121), we get a palindrome (241321123142).

The spelling of 121010113021 in words is "one hundred twenty-one billion, ten million, one hundred thirteen thousand, twenty-one".