20223113021 has 6 divisors (see below), whose sum is σ = 20452900122. Its totient is φ = 19995879200.

The previous prime is 20223112991. The next prime is 20223113033. The reversal of 20223113021 is 12031132202.

It can be written as a sum of positive squares in 3 ways, for example, as 1551256996 + 18671856025 = 39386^2 + 136645^2 .

It is not a de Polignac number, because 20223113021 - 2³⁴ = 3043243837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20223113041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1268630 + ... + 1284471.

It is an arithmetic number, because the mean of its divisors is an integer number (3408816687).

Almost surely, 2^20223113021 is an apocalyptic number.

It is an amenable number.

20223113021 is a deficient number, since it is larger than the sum of its proper divisors (229787101).

20223113021 is an frugal number, since it uses more digits than its factorization.

20223113021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2553279 (or 2553190 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20223113021 its reverse (12031132202), we get a palindrome (32254245223).

The spelling of 20223113021 in words is "twenty billion, two hundred twenty-three million, one hundred thirteen thousand, twenty-one".