20021232032 has 24 divisors (see below), whose sum is σ = 39559116996. Its totient is φ = 9974472192.

The previous prime is 20021232017. The next prime is 20021232157. The reversal of 20021232032 is 23023212002.

It can be written as a sum of positive squares in 2 ways, for example, as 19666135696 + 355096336 = 140236^2 + 18844^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20021232032.

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, 1120493 + ... + 1138220.

Almost surely, 2^20021232032 is an apocalyptic number.

It is an amenable number.

20021232032 is a deficient number, since it is larger than the sum of its proper divisors (19537884964).

20021232032 is a wasteful number, since it uses less digits than its factorization.

20021232032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2259000 (or 2258992 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 20021232032 its reverse (23023212002), we get a palindrome (43044444034).

The spelling of 20021232032 in words is "twenty billion, twenty-one million, two hundred thirty-two thousand, thirty-two".