22212313031 has 4 divisors (see below), whose sum is σ = 22212641472. Its totient is φ = 22211984592.

The previous prime is 22212313027. The next prime is 22212313063. The reversal of 22212313031 is 13031321222.

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 22212313031 - 2² = 22212313027 is a prime.

It is a super-2 number, since 2×22212313031² (a number of 21 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 = 22212312994 and 22212313012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22212313231) 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, 21335 + ... + 211848.

It is an arithmetic number, because the mean of its divisors is an integer number (5553160368).

Almost surely, 2^22212313031 is an apocalyptic number.

22212313031 is a deficient number, since it is larger than the sum of its proper divisors (328441).

22212313031 is an equidigital number, since it uses as much as digits as its factorization.

22212313031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328440.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 22212313031 its reverse (13031321222), we get a palindrome (35243634253).

The spelling of 22212313031 in words is "twenty-two billion, two hundred twelve million, three hundred thirteen thousand, thirty-one".