21132883 has 16 divisors (see below), whose sum is σ = 23857920. Its totient is φ = 18618336.

The previous prime is 21132877. The next prime is 21132893. The reversal of 21132883 is 38823112.

It is a cyclic number.

It is not a de Polignac number, because 21132883 - 2¹⁷ = 21001811 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21132833) 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, 15516 + ... + 16822.

It is an arithmetic number, because the mean of its divisors is an integer number (1491120).

Almost surely, 2^21132883 is an apocalyptic number.

21132883 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

21132883 is a deficient number, since it is larger than the sum of its proper divisors (2725037).

21132883 is a wasteful number, since it uses less digits than its factorization.

21132883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1386.

The product of its digits is 2304, while the sum is 28.

The square root of 21132883 is about 4597.0515550731. The cubic root of 21132883 is about 276.4731216794.

Adding to 21132883 its reverse (38823112), we get a palindrome (59955995).

The spelling of 21132883 in words is "twenty-one million, one hundred thirty-two thousand, eight hundred eighty-three".