21332995 has 4 divisors (see below), whose sum is σ = 25599600. Its totient is φ = 17066392.

The previous prime is 21332963. The next prime is 21333007. The reversal of 21332995 is 59923312.

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 21332995 - 2⁵ = 21332963 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21332995.

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, 2133295 + ... + 2133304.

It is an arithmetic number, because the mean of its divisors is an integer number (6399900).

Almost surely, 2^21332995 is an apocalyptic number.

21332995 is a deficient number, since it is larger than the sum of its proper divisors (4266605).

21332995 is an equidigital number, since it uses as much as digits as its factorization.

21332995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4266604.

The product of its digits is 14580, while the sum is 34.

The square root of 21332995 is about 4618.7655277141. The cubic root of 21332995 is about 277.3430435623.

The spelling of 21332995 in words is "twenty-one million, three hundred thirty-two thousand, nine hundred ninety-five".