30331012121 has 16 divisors (see below), whose sum is σ = 32588049600. Its totient is φ = 28146083328.

The previous prime is 30331012097. The next prime is 30331012133. The reversal of 30331012121 is 12121013303.

It is a cyclic number.

It is not a de Polignac number, because 30331012121 - 2⁶ = 30331012057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 30331012121.

It is not an unprimeable number, because it can be changed into a prime (30331012721) 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, 97121 + ... + 264753.

It is an arithmetic number, because the mean of its divisors is an integer number (2036753100).

Almost surely, 2^30331012121 is an apocalyptic number.

It is an amenable number.

30331012121 is a deficient number, since it is larger than the sum of its proper divisors (2257037479).

30331012121 is a wasteful number, since it uses less digits than its factorization.

30331012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167848.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 30331012121 its reverse (12121013303), we get a palindrome (42452025424).

The spelling of 30331012121 in words is "thirty billion, three hundred thirty-one million, twelve thousand, one hundred twenty-one".