21030233132 has 6 divisors (see below), whose sum is σ = 36802907988. Its totient is φ = 10515116564.

The previous prime is 21030233083. The next prime is 21030233179. The reversal of 21030233132 is 23133203012.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2628779138 + ... + 2628779145.

It is an arithmetic number, because the mean of its divisors is an integer number (6133817998).

Almost surely, 2^21030233132 is an apocalyptic number.

It is an amenable number.

21030233132 is a deficient number, since it is larger than the sum of its proper divisors (15772674856).

21030233132 is a wasteful number, since it uses less digits than its factorization.

21030233132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5257558287 (or 5257558285 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 21030233132 its reverse (23133203012), we get a palindrome (44163436144).

The spelling of 21030233132 in words is "twenty-one billion, thirty million, two hundred thirty-three thousand, one hundred thirty-two".