121031012023221 has 16 divisors (see below), whose sum is σ = 162410428684800. Its totient is φ = 80169518240448.

The previous prime is 121031012023213. The next prime is 121031012023241. The reversal of 121031012023221 is 122320210130121.

It is not a de Polignac number, because 121031012023221 - 2³ = 121031012023213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121031012023241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3495715 + ... + 15946223.

It is an arithmetic number, because the mean of its divisors is an integer number (10150651792800).

Almost surely, 2^{121031012023221} is an apocalyptic number.

It is an amenable number.

121031012023221 is a deficient number, since it is larger than the sum of its proper divisors (41379416661579).

121031012023221 is a wasteful number, since it uses less digits than its factorization.

121031012023221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12471308.

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

Adding to 121031012023221 its reverse (122320210130121), we get a palindrome (243351222153342).

The spelling of 121031012023221 in words is "one hundred twenty-one trillion, thirty-one billion, twelve million, twenty-three thousand, two hundred twenty-one".