121311321012331 has 4 divisors (see below), whose sum is σ = 121313093679232. Its totient is φ = 121309548345432.

The previous prime is 121311321012319. The next prime is 121311321012451. The reversal of 121311321012331 is 133210123113121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121311321012331 - 2¹⁷ = 121311320881259 is a prime.

It is a super-2 number, since 2×121311321012331² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121311321012296 and 121311321012305.

It is not an unprimeable number, because it can be changed into a prime (121311301012331) 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, 886230795 + ... + 886367668.

It is an arithmetic number, because the mean of its divisors is an integer number (30328273419808).

Almost surely, 2^{121311321012331} is an apocalyptic number.

121311321012331 is a deficient number, since it is larger than the sum of its proper divisors (1772666901).

121311321012331 is an equidigital number, since it uses as much as digits as its factorization.

121311321012331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1772666900.

The product of its (nonzero) digits is 648, while the sum is 25.

Adding to 121311321012331 its reverse (133210123113121), we get a palindrome (254521444125452).

The spelling of 121311321012331 in words is "one hundred twenty-one trillion, three hundred eleven billion, three hundred twenty-one million, twelve thousand, three hundred thirty-one".