13221735315 has 16 divisors (see below), whose sum is σ = 21178919328. Its totient is φ = 7043544576.

The previous prime is 13221735269. The next prime is 13221735323. The reversal of 13221735315 is 51353712231.

It is not a de Polignac number, because 13221735315 - 2⁶ = 13221735251 is a prime.

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, 489382 + ... + 515691.

It is an arithmetic number, because the mean of its divisors is an integer number (1323682458).

Almost surely, 2^13221735315 is an apocalyptic number.

13221735315 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13221735315 is a deficient number, since it is larger than the sum of its proper divisors (7957184013).

13221735315 is a wasteful number, since it uses less digits than its factorization.

13221735315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005958.

The product of its digits is 18900, while the sum is 33.

The spelling of 13221735315 in words is "thirteen billion, two hundred twenty-one million, seven hundred thirty-five thousand, three hundred fifteen".