121222100331 has 24 divisors (see below), whose sum is σ = 175586960640. Its totient is φ = 80589648816.

The previous prime is 121222100327. The next prime is 121222100407. The reversal of 121222100331 is 133001222121.

121222100331 is a `hidden beast` number, since 1 + 2 + 122 + 210 + 0 + 331 = 666.

It is not a de Polignac number, because 121222100331 - 2² = 121222100327 is a prime.

It is a super-2 number, since 2×121222100331² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121222105331) 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, 4842810 + ... + 4867776.

It is an arithmetic number, because the mean of its divisors is an integer number (7316123360).

Almost surely, 2^121222100331 is an apocalyptic number.

121222100331 is a deficient number, since it is larger than the sum of its proper divisors (54364860309).

121222100331 is a wasteful number, since it uses less digits than its factorization.

121222100331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26455 (or 26452 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 121222100331 its reverse (133001222121), we get a palindrome (254223322452).

The spelling of 121222100331 in words is "one hundred twenty-one billion, two hundred twenty-two million, one hundred thousand, three hundred thirty-one".