21014420532 has 24 divisors (see below), whose sum is σ = 56038454976. Its totient is φ = 6004120128.

The previous prime is 21014420519. The next prime is 21014420533. The reversal of 21014420532 is 23502441012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21014420533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125085753 + ... + 125085920.

It is an arithmetic number, because the mean of its divisors is an integer number (2334935624).

Almost surely, 2^21014420532 is an apocalyptic number.

It is an amenable number.

21014420532 is an abundant number, since it is smaller than the sum of its proper divisors (35024034444).

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

21014420532 is a wasteful number, since it uses less digits than its factorization.

21014420532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250171687 (or 250171685 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 21014420532 its reverse (23502441012), we get a palindrome (44516861544).

The spelling of 21014420532 in words is "twenty-one billion, fourteen million, four hundred twenty thousand, five hundred thirty-two".