331222012 has 24 divisors (see below), whose sum is σ = 637569072. Its totient is φ = 150553040.

The previous prime is 331221983. The next prime is 331222013. The reversal of 331222012 is 210222133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331222013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25783 + ... + 36430.

It is an arithmetic number, because the mean of its divisors is an integer number (26565378).

Almost surely, 2^331222012 is an apocalyptic number.

It is an amenable number.

331222012 is a deficient number, since it is larger than the sum of its proper divisors (306347060).

331222012 is a wasteful number, since it uses less digits than its factorization.

331222012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62250 (or 62226 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 331222012 is about 18199.5058174666. The cubic root of 331222012 is about 691.8942641971.

Adding to 331222012 its reverse (210222133), we get a palindrome (541444145).

The spelling of 331222012 in words is "three hundred thirty-one million, two hundred twenty-two thousand, twelve".