121504252331 has 24 divisors (see below), whose sum is σ = 162306250560. Its totient is φ = 89695544400.

The previous prime is 121504252277. The next prime is 121504252351. The reversal of 121504252331 is 133252405121.

It is not a de Polignac number, because 121504252331 - 2¹⁰ = 121504251307 is a prime.

It is a super-2 number, since 2×121504252331² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121504252294 and 121504252303.

It is not an unprimeable number, because it can be changed into a prime (121504252351) 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 23 ways as a sum of consecutive naturals, for example, 5922005 + ... + 5942486.

It is an arithmetic number, because the mean of its divisors is an integer number (6762760440).

Almost surely, 2^121504252331 is an apocalyptic number.

121504252331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121504252331 is a deficient number, since it is larger than the sum of its proper divisors (40801998229).

121504252331 is a wasteful number, since it uses less digits than its factorization.

121504252331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11864535 (or 11864528 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 121504252331 its reverse (133252405121), we get a palindrome (254756657452).

The spelling of 121504252331 in words is "one hundred twenty-one billion, five hundred four million, two hundred fifty-two thousand, three hundred thirty-one".