22211312221031 has 4 divisors (see below), whose sum is σ = 22211321647200. Its totient is φ = 22211302794864.

The previous prime is 22211312220953. The next prime is 22211312221081. The reversal of 22211312221031 is 13012221311222.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 22211312221031 - 2¹⁸ = 22211311958887 is a prime.

It is a super-2 number, since 2×22211312221031² (a number of 27 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 = 22211312220988 and 22211312221006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22211312221081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2292050 + ... + 7048128.

It is an arithmetic number, because the mean of its divisors is an integer number (5552830411800).

Almost surely, 2^{22211312221031} is an apocalyptic number.

22211312221031 is a deficient number, since it is larger than the sum of its proper divisors (9426169).

22211312221031 is an equidigital number, since it uses as much as digits as its factorization.

22211312221031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9426168.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 22211312221031 its reverse (13012221311222), we get a palindrome (35223533532253).

The spelling of 22211312221031 in words is "twenty-two trillion, two hundred eleven billion, three hundred twelve million, two hundred twenty-one thousand, thirty-one".