221740216315 has 4 divisors (see below), whose sum is σ = 266088259584. Its totient is φ = 177392173048.

The previous prime is 221740216283. The next prime is 221740216337. The reversal of 221740216315 is 513612047122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 221740216315 - 2⁵ = 221740216283 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22174021627 + ... + 22174021636.

It is an arithmetic number, because the mean of its divisors is an integer number (66522064896).

Almost surely, 2^221740216315 is an apocalyptic number.

221740216315 is a deficient number, since it is larger than the sum of its proper divisors (44348043269).

221740216315 is an equidigital number, since it uses as much as digits as its factorization.

221740216315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44348043268.

The product of its (nonzero) digits is 20160, while the sum is 34.

The spelling of 221740216315 in words is "two hundred twenty-one billion, seven hundred forty million, two hundred sixteen thousand, three hundred fifteen".