21226700115 has 24 divisors (see below), whose sum is σ = 38392642080. Its totient is φ = 10828692864.

The previous prime is 21226700111. The next prime is 21226700167. The reversal of 21226700115 is 51100762212.

It is not a de Polignac number, because 21226700115 - 2² = 21226700111 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21226700111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10253410 + ... + 10255479.

It is an arithmetic number, because the mean of its divisors is an integer number (1599693420).

Almost surely, 2^21226700115 is an apocalyptic number.

21226700115 is a deficient number, since it is larger than the sum of its proper divisors (17165941965).

21226700115 is a wasteful number, since it uses less digits than its factorization.

21226700115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20508923 (or 20508920 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The spelling of 21226700115 in words is "twenty-one billion, two hundred twenty-six million, seven hundred thousand, one hundred fifteen".