21295113 has 16 divisors (see below), whose sum is σ = 33242496. Its totient is φ = 11871360.

The previous prime is 21295111. The next prime is 21295117. The reversal of 21295113 is 31159212.

It is not a de Polignac number, because 21295113 - 2¹ = 21295111 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21295111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11506 + ... + 13227.

It is an arithmetic number, because the mean of its divisors is an integer number (2077656).

Almost surely, 2^21295113 is an apocalyptic number.

It is an amenable number.

21295113 is a deficient number, since it is larger than the sum of its proper divisors (11947383).

21295113 is a wasteful number, since it uses less digits than its factorization.

21295113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24784.

The product of its digits is 540, while the sum is 24.

The square root of 21295113 is about 4614.6628262529. The cubic root of 21295113 is about 277.1787826109.

The spelling of 21295113 in words is "twenty-one million, two hundred ninety-five thousand, one hundred thirteen".