315221122 has 16 divisors (see below), whose sum is σ = 477432000. Its totient is φ = 156083760.

The previous prime is 315221117. The next prime is 315221143. The reversal of 315221122 is 221122513.

It is a self number, because there is not a number n which added to its sum of digits gives 315221122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111547 + ... + 114337.

It is an arithmetic number, because the mean of its divisors is an integer number (29839500).

Almost surely, 2^315221122 is an apocalyptic number.

315221122 is a deficient number, since it is larger than the sum of its proper divisors (162210878).

315221122 is a wasteful number, since it uses less digits than its factorization.

315221122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3321.

The product of its digits is 240, while the sum is 19.

The square root of 315221122 is about 17754.4676630982. The cubic root of 315221122 is about 680.5683843515.

Adding to 315221122 its reverse (221122513), we get a palindrome (536343635).

The spelling of 315221122 in words is "three hundred fifteen million, two hundred twenty-one thousand, one hundred twenty-two".