121131045504321 has 32 divisors (see below), whose sum is σ = 164891275976448. Its totient is φ = 79080940646400.

The previous prime is 121131045504233. The next prime is 121131045504323. The reversal of 121131045504321 is 123405540131121.

It is not a de Polignac number, because 121131045504321 - 2⁷ = 121131045504193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121131045504323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45949021 + ... + 48513653.

It is an arithmetic number, because the mean of its divisors is an integer number (5152852374264).

Almost surely, 2^{121131045504321} is an apocalyptic number.

It is an amenable number.

121131045504321 is a deficient number, since it is larger than the sum of its proper divisors (43760230472127).

121131045504321 is a wasteful number, since it uses less digits than its factorization.

121131045504321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2566441.

The product of its (nonzero) digits is 14400, while the sum is 33.

Adding to 121131045504321 its reverse (123405540131121), we get a palindrome (244536585635442).

The spelling of 121131045504321 in words is "one hundred twenty-one trillion, one hundred thirty-one billion, forty-five million, five hundred four thousand, three hundred twenty-one".