21010002332 has 24 divisors (see below), whose sum is σ = 40217569392. Its totient is φ = 9524390400.

The previous prime is 21010002317. The next prime is 21010002359. The reversal of 21010002332 is 23320001012.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 623669 + ... + 656492.

It is an arithmetic number, because the mean of its divisors is an integer number (1675732058).

Almost surely, 2^21010002332 is an apocalyptic number.

21010002332 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21010002332 is a deficient number, since it is larger than the sum of its proper divisors (19207567060).

21010002332 is a wasteful number, since it uses less digits than its factorization.

21010002332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1280549 (or 1280547 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 21010002332 its reverse (23320001012), we get a palindrome (44330003344).

The spelling of 21010002332 in words is "twenty-one billion, ten million, two thousand, three hundred thirty-two".