21150022623115 has 32 divisors (see below), whose sum is σ = 27398373534720. Its totient is φ = 15625346706816.

The previous prime is 21150022623071. The next prime is 21150022623179. The reversal of 21150022623115 is 51132622005112.

It is a cyclic number.

It is not a de Polignac number, because 21150022623115 - 2⁷ = 21150022622987 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58124434 + ... + 58487176.

It is an arithmetic number, because the mean of its divisors is an integer number (856199172960).

Almost surely, 2^{21150022623115} is an apocalyptic number.

21150022623115 is a deficient number, since it is larger than the sum of its proper divisors (6248350911605).

21150022623115 is a wasteful number, since it uses less digits than its factorization.

21150022623115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380283.

The product of its (nonzero) digits is 7200, while the sum is 31.

Adding to 21150022623115 its reverse (51132622005112), we get a palindrome (72282644628227).

The spelling of 21150022623115 in words is "twenty-one trillion, one hundred fifty billion, twenty-two million, six hundred twenty-three thousand, one hundred fifteen".