331000023212121 has 16 divisors (see below), whose sum is σ = 467423487558144. Its totient is φ = 207628805900544.

The previous prime is 331000023212071. The next prime is 331000023212147. The reversal of 331000023212121 is 121212320000133.

It is not a de Polignac number, because 331000023212121 - 2³³ = 330991433277529 is a prime.

It is a super-2 number, since 2×331000023212121² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (331000023212021) 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, 897988521 + ... + 898357046.

It is an arithmetic number, because the mean of its divisors is an integer number (29213967972384).

Almost surely, 2^{331000023212121} is an apocalyptic number.

It is an amenable number.

331000023212121 is a deficient number, since it is larger than the sum of its proper divisors (136423464346023).

331000023212121 is a wasteful number, since it uses less digits than its factorization.

331000023212121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1796349200.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 331000023212121 its reverse (121212320000133), we get a palindrome (452212343212254).

The spelling of 331000023212121 in words is "three hundred thirty-one trillion, twenty-three million, two hundred twelve thousand, one hundred twenty-one".