21233132010 has 24 divisors (see below), whose sum is σ = 55206143460. Its totient is φ = 5662168512.

The previous prime is 21233131957. The next prime is 21233132027. The reversal of 21233132010 is 1023133212.

21233132010 is a `hidden beast` number, since 2 + 1 + 2 + 331 + 320 + 10 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 17829459729 + 3403672281 = 133527^2 + 58341^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 117961755 + ... + 117961934.

Almost surely, 2^21233132010 is an apocalyptic number.

21233132010 is an abundant number, since it is smaller than the sum of its proper divisors (33973011450).

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

21233132010 is a wasteful number, since it uses less digits than its factorization.

21233132010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235923702 (or 235923699 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 21233132010 its reverse (1023133212), we get a palindrome (22256265222).

The spelling of 21233132010 in words is "twenty-one billion, two hundred thirty-three million, one hundred thirty-two thousand, ten".