22021132 has 12 divisors (see below), whose sum is σ = 44042320. Its totient is φ = 9437616.

The previous prime is 22021123. The next prime is 22021151. The reversal of 22021132 is 23112022.

22021132 is an admirable number.

It is a super-2 number, since 2×22021132² = 969860509122848, which contains 22 as substring.

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, 393207 + ... + 393262.

Almost surely, 2^22021132 is an apocalyptic number.

It is an amenable number.

22021132 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22021132 is a wasteful number, since it uses less digits than its factorization.

22021132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786480 (or 786478 counting only the distinct ones).

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

The square root of 22021132 is about 4692.6678979020. The cubic root of 22021132 is about 280.2936205601.

Adding to 22021132 its reverse (23112022), we get a palindrome (45133154).

The spelling of 22021132 in words is "twenty-two million, twenty-one thousand, one hundred thirty-two".