20022021232 has 20 divisors (see below), whose sum is σ = 38832812656. Its totient is φ = 10000650240.

The previous prime is 20022021211. The next prime is 20022021241. The reversal of 20022021232 is 23212022002.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 631569 + ... + 662512.

Almost surely, 2^20022021232 is an apocalyptic number.

It is an amenable number.

20022021232 is a deficient number, since it is larger than the sum of its proper divisors (18810791424).

20022021232 is a wasteful number, since it uses less digits than its factorization.

20022021232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1295056 (or 1295050 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 20022021232 its reverse (23212022002), we get a palindrome (43234043234).

The spelling of 20022021232 in words is "twenty billion, twenty-two million, twenty-one thousand, two hundred thirty-two".