21030210232 has 32 divisors (see below), whose sum is σ = 39678930000. Its totient is φ = 10449243648.

The previous prime is 21030210199. The next prime is 21030210259. The reversal of 21030210232 is 23201203012.

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, 2557744 + ... + 2565952.

Almost surely, 2^21030210232 is an apocalyptic number.

It is an amenable number.

21030210232 is a deficient number, since it is larger than the sum of its proper divisors (18648719768).

21030210232 is a wasteful number, since it uses less digits than its factorization.

21030210232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10183 (or 10179 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 21030210232 its reverse (23201203012), we get a palindrome (44231413244).

The spelling of 21030210232 in words is "twenty-one billion, thirty million, two hundred ten thousand, two hundred thirty-two".