121320120112331 has 24 divisors (see below), whose sum is σ = 144012531201840. Its totient is φ = 101876435640000.

The previous prime is 121320120112291. The next prime is 121320120112409. The reversal of 121320120112331 is 133211021023121.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-121320120112331 is a prime.

It is a super-2 number, since 2×121320120112331² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121320120112297 and 121320120112306.

It is not an unprimeable number, because it can be changed into a prime (121320120112231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 80104076 + ... + 81604553.

It is an arithmetic number, because the mean of its divisors is an integer number (6000522133410).

Almost surely, 2^{121320120112331} is an apocalyptic number.

121320120112331 is a deficient number, since it is larger than the sum of its proper divisors (22692411089509).

121320120112331 is a wasteful number, since it uses less digits than its factorization.

121320120112331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161708955 (or 161708948 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 121320120112331 its reverse (133211021023121), we get a palindrome (254531141135452).

The spelling of 121320120112331 in words is "one hundred twenty-one trillion, three hundred twenty billion, one hundred twenty million, one hundred twelve thousand, three hundred thirty-one".