22020220231 has 4 divisors (see below), whose sum is σ = 22779538200. Its totient is φ = 21260902264.

The previous prime is 22020220177. The next prime is 22020220249. The reversal of 22020220231 is 13202202022.

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 22020220231 - 2²⁹ = 21483349319 is a prime.

It is a super-2 number, since 2×22020220231² (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 (22020220291) 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, 379658941 + ... + 379658998.

It is an arithmetic number, because the mean of its divisors is an integer number (5694884550).

Almost surely, 2^22020220231 is an apocalyptic number.

22020220231 is a deficient number, since it is larger than the sum of its proper divisors (759317969).

22020220231 is an equidigital number, since it uses as much as digits as its factorization.

22020220231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 759317968.

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

Adding to 22020220231 its reverse (13202202022), we get a palindrome (35222422253).

The spelling of 22020220231 in words is "twenty-two billion, twenty million, two hundred twenty thousand, two hundred thirty-one".