121332502331 has 4 divisors (see below), whose sum is σ = 121344909432. Its totient is φ = 121320095232.

The previous prime is 121332502309. The next prime is 121332502337. The reversal of 121332502331 is 133205233121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133205233121 = 58757 ⋅2267053.

It is a cyclic number.

It is not a de Polignac number, because 121332502331 - 2²⁶ = 121265393467 is a prime.

It is a super-2 number, since 2×121332502331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121332502331.

It is not an unprimeable number, because it can be changed into a prime (121332502337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6188870 + ... + 6208443.

It is an arithmetic number, because the mean of its divisors is an integer number (30336227358).

Almost surely, 2^121332502331 is an apocalyptic number.

121332502331 is a deficient number, since it is larger than the sum of its proper divisors (12407101).

121332502331 is an equidigital number, since it uses as much as digits as its factorization.

121332502331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12407100.

The product of its (nonzero) digits is 3240, while the sum is 26.

Adding to 121332502331 its reverse (133205233121), we get a palindrome (254537735452).

The spelling of 121332502331 in words is "one hundred twenty-one billion, three hundred thirty-two million, five hundred two thousand, three hundred thirty-one".