21112995 has 8 divisors (see below), whose sum is σ = 33780816. Its totient is φ = 11260256.

The previous prime is 21112981. The next prime is 21112999. The reversal of 21112995 is 59921112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21112995 - 2⁴ = 21112979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21112999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 703752 + ... + 703781.

It is an arithmetic number, because the mean of its divisors is an integer number (4222602).

Almost surely, 2^21112995 is an apocalyptic number.

21112995 is a deficient number, since it is larger than the sum of its proper divisors (12667821).

21112995 is a wasteful number, since it uses less digits than its factorization.

21112995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1407541.

The product of its digits is 1620, while the sum is 30.

The square root of 21112995 is about 4594.8879202871. The cubic root of 21112995 is about 276.3863655214.

The spelling of 21112995 in words is "twenty-one million, one hundred twelve thousand, nine hundred ninety-five".