22311113221 has 2 divisors, whose sum is σ = 22311113222. Its totient is φ = 22311113220.

The previous prime is 22311113207. The next prime is 22311113273. The reversal of 22311113221 is 12231111322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19828582596 + 2482530625 = 140814^2 + 49825^2 .

It is a cyclic number.

It is not a de Polignac number, because 22311113221 - 2⁵ = 22311113189 is a prime.

It is a super-3 number, since 3×22311113221³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22311113281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11155556610 + 11155556611.

It is an arithmetic number, because the mean of its divisors is an integer number (11155556611).

Almost surely, 2^22311113221 is an apocalyptic number.

It is an amenable number.

22311113221 is a deficient number, since it is larger than the sum of its proper divisors (1).

22311113221 is an equidigital number, since it uses as much as digits as its factorization.

22311113221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144, while the sum is 19.

Adding to 22311113221 its reverse (12231111322), we get a palindrome (34542224543).

The spelling of 22311113221 in words is "twenty-two billion, three hundred eleven million, one hundred thirteen thousand, two hundred twenty-one".