21132083 has 6 divisors (see below), whose sum is σ = 24582276. Its totient is φ = 18113172.

The previous prime is 21132079. The next prime is 21132103. The reversal of 21132083 is 38023112.

It is not a de Polignac number, because 21132083 - 2² = 21132079 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21132383) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 215585 + ... + 215682.

It is an arithmetic number, because the mean of its divisors is an integer number (4097046).

Almost surely, 2^21132083 is an apocalyptic number.

21132083 is a deficient number, since it is larger than the sum of its proper divisors (3450193).

21132083 is an equidigital number, since it uses as much as digits as its factorization.

21132083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431281 (or 431274 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 21132083 is about 4596.9645419559. The cubic root of 21132083 is about 276.4696329412.

Adding to 21132083 its reverse (38023112), we get a palindrome (59155195).

The spelling of 21132083 in words is "twenty-one million, one hundred thirty-two thousand, eighty-three".