21233130032 has 20 divisors (see below), whose sum is σ = 41237386680. Its totient is φ = 10591223808.

The previous prime is 21233130029. The next prime is 21233130053. The reversal of 21233130032 is 23003133212.

It is a junction number, because it is equal to n+sod(n) for n = 21233129986 and 21233130013.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1576913 + ... + 1590320.

It is an arithmetic number, because the mean of its divisors is an integer number (2061869334).

Almost surely, 2^21233130032 is an apocalyptic number.

It is an amenable number.

21233130032 is a deficient number, since it is larger than the sum of its proper divisors (20004256648).

21233130032 is a wasteful number, since it uses less digits than its factorization.

21233130032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3167660 (or 3167654 counting only the distinct ones).

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

Adding to 21233130032 its reverse (23003133212), we get a palindrome (44236263244).

The spelling of 21233130032 in words is "twenty-one billion, two hundred thirty-three million, one hundred thirty thousand, thirty-two".