315221121130 has 32 divisors (see below), whose sum is σ = 601268418576. Its totient is φ = 118573891584.

The previous prime is 315221121109. The next prime is 315221121247. The reversal of 315221121130 is 31121122513.

It can be written as a sum of positive squares in 8 ways, for example, as 50692972801 + 264528148329 = 225151^2 + 514323^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 554919 + ... + 968698.

Almost surely, 2^315221121130 is an apocalyptic number.

315221121130 is a deficient number, since it is larger than the sum of its proper divisors (286047297446).

315221121130 is a wasteful number, since it uses less digits than its factorization.

315221121130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1524858.

The product of its (nonzero) digits is 360, while the sum is 22.

Adding to 315221121130 its reverse (31121122513), we get a palindrome (346342243643).

The spelling of 315221121130 in words is "three hundred fifteen billion, two hundred twenty-one million, one hundred twenty-one thousand, one hundred thirty".