121232320011021 has 16 divisors (see below), whose sum is σ = 161708308027200. Its totient is φ = 80788943211648.

The previous prime is 121232320010993. The next prime is 121232320011031. The reversal of 121232320011021 is 120110023232121.

It is not a de Polignac number, because 121232320011021 - 2²⁶ = 121232252902157 is a prime.

It is a super-2 number, since 2×121232320011021² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121232320011031) 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, 126838135 + ... + 127790363.

It is an arithmetic number, because the mean of its divisors is an integer number (10106769251700).

Almost surely, 2^{121232320011021} is an apocalyptic number.

It is an amenable number.

121232320011021 is a deficient number, since it is larger than the sum of its proper divisors (40475988016179).

121232320011021 is a wasteful number, since it uses less digits than its factorization.

121232320011021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 969308.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 121232320011021 its reverse (120110023232121), we get a palindrome (241342343243142).

The spelling of 121232320011021 in words is "one hundred twenty-one trillion, two hundred thirty-two billion, three hundred twenty million, eleven thousand, twenty-one".