20211132 has 24 divisors (see below), whose sum is σ = 48681472. Its totient is φ = 6519600.

The previous prime is 20211131. The next prime is 20211157. The reversal of 20211132 is 23111202.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20211131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26794 + ... + 27537.

Almost surely, 2^20211132 is an apocalyptic number.

It is an amenable number.

20211132 is an abundant number, since it is smaller than the sum of its proper divisors (28470340).

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

20211132 is a wasteful number, since it uses less digits than its factorization.

20211132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54369 (or 54367 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 20211132 is about 4495.6792590219. The cubic root of 20211132 is about 272.3935874944.

Adding to 20211132 its reverse (23111202), we get a palindrome (43322334).

The spelling of 20211132 in words is "twenty million, two hundred eleven thousand, one hundred thirty-two".