312221011330 has 16 divisors (see below), whose sum is σ = 581377056120. Its totient is φ = 120581907712.

The previous prime is 312221011261. The next prime is 312221011373. The reversal of 312221011330 is 33110122213.

It can be written as a sum of positive squares in 4 ways, for example, as 259303989961 + 52917021369 = 509219^2 + 230037^2 .

It is a junction number, because it is equal to n+sod(n) for n = 312221011298 and 312221011307.

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, 538311799 + ... + 538312378.

Almost surely, 2^312221011330 is an apocalyptic number.

312221011330 is a deficient number, since it is larger than the sum of its proper divisors (269156044790).

312221011330 is a wasteful number, since it uses less digits than its factorization.

312221011330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1076624213.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 312221011330 its reverse (33110122213), we get a palindrome (345331133543).

The spelling of 312221011330 in words is "three hundred twelve billion, two hundred twenty-one million, eleven thousand, three hundred thirty".