222020312131 has 4 divisors (see below), whose sum is σ = 222024828064. Its totient is φ = 222015796200.

The previous prime is 222020312113. The next prime is 222020312177. The reversal of 222020312131 is 131213020222.

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 222020312131 - 2⁹ = 222020311619 is a prime.

It is a super-2 number, since 2×222020312131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222020312099 and 222020312108.

It is not an unprimeable number, because it can be changed into a prime (222020312231) 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, 2183400 + ... + 2282821.

It is an arithmetic number, because the mean of its divisors is an integer number (55506207016).

Almost surely, 2^222020312131 is an apocalyptic number.

222020312131 is a deficient number, since it is larger than the sum of its proper divisors (4515933).

222020312131 is an equidigital number, since it uses as much as digits as its factorization.

222020312131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4515932.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 222020312131 its reverse (131213020222), we get a palindrome (353233332353).

The spelling of 222020312131 in words is "two hundred twenty-two billion, twenty million, three hundred twelve thousand, one hundred thirty-one".