21003322132 has 48 divisors (see below), whose sum is σ = 39893720832. Its totient is φ = 9618013440.

The previous prime is 21003322127. The next prime is 21003322139. The reversal of 21003322132 is 23122330012.

It is a super-2 number, since 2×21003322132² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21003322139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5477688 + ... + 5481520.

It is an arithmetic number, because the mean of its divisors is an integer number (831119184).

Almost surely, 2^21003322132 is an apocalyptic number.

It is an amenable number.

21003322132 is a deficient number, since it is larger than the sum of its proper divisors (18890398700).

21003322132 is a wasteful number, since it uses less digits than its factorization.

21003322132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4648 (or 4646 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21003322132 its reverse (23122330012), we get a palindrome (44125652144).

The spelling of 21003322132 in words is "twenty-one billion, three million, three hundred twenty-two thousand, one hundred thirty-two".