20020222231 has 4 divisors (see below), whose sum is σ = 20302197264. Its totient is φ = 19738247200.

The previous prime is 20020222217. The next prime is 20020222237. The reversal of 20020222231 is 13222202002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20020222231 - 2⁵ = 20020222199 is a prime.

It is a super-2 number, since 2×20020222231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020222237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140987410 + ... + 140987551.

It is an arithmetic number, because the mean of its divisors is an integer number (5075549316).

Almost surely, 2^20020222231 is an apocalyptic number.

20020222231 is a deficient number, since it is larger than the sum of its proper divisors (281975033).

20020222231 is an equidigital number, since it uses as much as digits as its factorization.

20020222231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281975032.

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

Adding to 20020222231 its reverse (13222202002), we get a palindrome (33242424233).

The spelling of 20020222231 in words is "twenty billion, twenty million, two hundred twenty-two thousand, two hundred thirty-one".