21122032 has 10 divisors (see below), whose sum is σ = 40923968. Its totient is φ = 10561008.

The previous prime is 21122009. The next prime is 21122033. The reversal of 21122032 is 23022112.

It is a super-2 number, since 2×21122032² = 892280471618048, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21122033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660048 + ... + 660079.

Almost surely, 2^21122032 is an apocalyptic number.

It is an amenable number.

21122032 is a deficient number, since it is larger than the sum of its proper divisors (19801936).

21122032 is a wasteful number, since it uses less digits than its factorization.

21122032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1320135 (or 1320129 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 21122032 is about 4595.8711905361. The cubic root of 21122032 is about 276.4257938025.

Adding to 21122032 its reverse (23022112), we get a palindrome (44144144).

The spelling of 21122032 in words is "twenty-one million, one hundred twenty-two thousand, thirty-two".