22115442251215 has 4 divisors (see below), whose sum is σ = 26538530701464. Its totient is φ = 17692353800968.

The previous prime is 22115442251209. The next prime is 22115442251293. The reversal of 22115442251215 is 51215224451122.

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 22115442251215 - 2²⁵ = 22115408696783 is a prime.

It is a Duffinian number.

It is a congruent 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, 2211544225117 + ... + 2211544225126.

It is an arithmetic number, because the mean of its divisors is an integer number (6634632675366).

Almost surely, 2^{22115442251215} is an apocalyptic number.

22115442251215 is a deficient number, since it is larger than the sum of its proper divisors (4423088450249).

22115442251215 is an equidigital number, since it uses as much as digits as its factorization.

22115442251215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4423088450248.

The product of its digits is 64000, while the sum is 37.

The spelling of 22115442251215 in words is "twenty-two trillion, one hundred fifteen billion, four hundred forty-two million, two hundred fifty-one thousand, two hundred fifteen".