121323311331 has 16 divisors (see below), whose sum is σ = 162579324960. Its totient is φ = 80475269120.

The previous prime is 121323311327. The next prime is 121323311359. The reversal of 121323311331 is 133113323121.

It is a cyclic number.

It is not a de Polignac number, because 121323311331 - 2² = 121323311327 is a prime.

It is a super-2 number, since 2×121323311331² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121323381331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 887575 + ... + 1015103.

It is an arithmetic number, because the mean of its divisors is an integer number (10161207810).

Almost surely, 2^121323311331 is an apocalyptic number.

121323311331 is a deficient number, since it is larger than the sum of its proper divisors (41256013629).

121323311331 is a wasteful number, since it uses less digits than its factorization.

121323311331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129126.

The product of its digits is 972, while the sum is 24.

Adding to 121323311331 its reverse (133113323121), we get a palindrome (254436634452).

The spelling of 121323311331 in words is "one hundred twenty-one billion, three hundred twenty-three million, three hundred eleven thousand, three hundred thirty-one".