121311222331 has 8 divisors (see below), whose sum is σ = 133681061360. Its totient is φ = 109375412832.

The previous prime is 121311222299. The next prime is 121311222349. The reversal of 121311222331 is 133222113121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121311222331 - 2⁵ = 121311222299 is a prime.

It is a super-2 number, since 2×121311222331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121311222631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108506796 + ... + 108507913.

It is an arithmetic number, because the mean of its divisors is an integer number (16710132670).

Almost surely, 2^121311222331 is an apocalyptic number.

121311222331 is a deficient number, since it is larger than the sum of its proper divisors (12369839029).

121311222331 is a wasteful number, since it uses less digits than its factorization.

121311222331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217014765.

The product of its digits is 432, while the sum is 22.

Adding to 121311222331 its reverse (133222113121), we get a palindrome (254533335452).

The spelling of 121311222331 in words is "one hundred twenty-one billion, three hundred eleven million, two hundred twenty-two thousand, three hundred thirty-one".