331220012115 has 32 divisors (see below), whose sum is σ = 535220259840. Its totient is φ = 174901526784.

The previous prime is 331220012111. The next prime is 331220012117. The reversal of 331220012115 is 511210022133.

It is not a de Polignac number, because 331220012115 - 2² = 331220012111 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 331220012091 and 331220012100.

It is not an unprimeable number, because it can be changed into a prime (331220012111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 548767 + ... + 981623.

It is an arithmetic number, because the mean of its divisors is an integer number (16725633120).

Almost surely, 2^331220012115 is an apocalyptic number.

331220012115 is a deficient number, since it is larger than the sum of its proper divisors (204000247725).

331220012115 is a wasteful number, since it uses less digits than its factorization.

331220012115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433371.

The product of its (nonzero) digits is 360, while the sum is 21.

Adding to 331220012115 its reverse (511210022133), we get a palindrome (842430034248).

The spelling of 331220012115 in words is "three hundred thirty-one billion, two hundred twenty million, twelve thousand, one hundred fifteen".