331010121 has 16 divisors (see below), whose sum is σ = 476006720. Its totient is φ = 203394240.

The previous prime is 331010117. The next prime is 331010123. The reversal of 331010121 is 121010133.

It is not a de Polignac number, because 331010121 - 2² = 331010117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 331010097 and 331010106.

It is not an unprimeable number, because it can be changed into a prime (331010123) 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, 21666 + ... + 33636.

It is an arithmetic number, because the mean of its divisors is an integer number (29750420).

Almost surely, 2^331010121 is an apocalyptic number.

It is an amenable number.

331010121 is a deficient number, since it is larger than the sum of its proper divisors (144996599).

331010121 is a wasteful number, since it uses less digits than its factorization.

331010121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12696.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 331010121 is about 18193.6835467697. The cubic root of 331010121 is about 691.7466920391.

Adding to 331010121 its sum of digits (12), we get a palindrome (331010133).

Adding to 331010121 its reverse (121010133), we get a palindrome (452020254).

It can be divided in two parts, 3310 and 10121, that added together give a palindrome (13431).

The spelling of 331010121 in words is "three hundred thirty-one million, ten thousand, one hundred twenty-one".