21421132000 has 96 divisors (see below), whose sum is σ = 55402008480. Its totient is φ = 8117452800.

The previous prime is 21421131997. The next prime is 21421132021. The reversal of 21421132000 is 23112412.

It is a super-2 number, since 2×21421132000² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64929 + ... + 216928.

It is an arithmetic number, because the mean of its divisors is an integer number (577104255).

Almost surely, 2^21421132000 is an apocalyptic number.

21421132000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21421132000 is an abundant number, since it is smaller than the sum of its proper divisors (33980876480).

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

21421132000 is a wasteful number, since it uses less digits than its factorization.

21421132000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281901 (or 281883 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 21421132000 its reverse (23112412), we get a palindrome (21444244412).

The spelling of 21421132000 in words is "twenty-one billion, four hundred twenty-one million, one hundred thirty-two thousand".