21132322 has 8 divisors (see below), whose sum is σ = 31718736. Its totient is φ = 10559412.

The previous prime is 21132317. The next prime is 21132341. The reversal of 21132322 is 22323112.

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

It is a super-2 number, since 2×21132322² = 893150066223368, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21132296 and 21132305.

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, 2793 + ... + 7075.

It is an arithmetic number, because the mean of its divisors is an integer number (3964842).

Almost surely, 2^21132322 is an apocalyptic number.

21132322 is a deficient number, since it is larger than the sum of its proper divisors (10586414).

21132322 is a wasteful number, since it uses less digits than its factorization.

21132322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6752.

The product of its digits is 144, while the sum is 16.

The square root of 21132322 is about 4596.9905372972. The cubic root of 21132322 is about 276.4706752110.

Adding to 21132322 its reverse (22323112), we get a palindrome (43455434).

The spelling of 21132322 in words is "twenty-one million, one hundred thirty-two thousand, three hundred twenty-two".