20243221392 has 20 divisors (see below), whose sum is σ = 52294988720. Its totient is φ = 6747740448.

The previous prime is 20243221381. The next prime is 20243221421. The reversal of 20243221392 is 29312234202.

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, 210866842 + ... + 210866937.

It is an arithmetic number, because the mean of its divisors is an integer number (2614749436).

Almost surely, 2^20243221392 is an apocalyptic number.

It is an amenable number.

20243221392 is an abundant number, since it is smaller than the sum of its proper divisors (32051767328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20243221392 is a wasteful number, since it uses less digits than its factorization.

20243221392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421733790 (or 421733784 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

Adding to 20243221392 its reverse (29312234202), we get a palindrome (49555455594).

The spelling of 20243221392 in words is "twenty billion, two hundred forty-three million, two hundred twenty-one thousand, three hundred ninety-two".