22310111221 has 2 divisors, whose sum is σ = 22310111222. Its totient is φ = 22310111220.

The previous prime is 22310111081. The next prime is 22310111227. The reversal of 22310111221 is 12211101322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14991308721 + 7318802500 = 122439^2 + 85550^2 .

It is a cyclic number.

It is not a de Polignac number, because 22310111221 - 2²³ = 22301722613 is a prime.

It is a super-3 number, since 3×22310111221³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 22310111195 and 22310111204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22310111227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11155055610 + 11155055611.

It is an arithmetic number, because the mean of its divisors is an integer number (11155055611).

Almost surely, 2^22310111221 is an apocalyptic number.

It is an amenable number.

22310111221 is a deficient number, since it is larger than the sum of its proper divisors (1).

22310111221 is an equidigital number, since it uses as much as digits as its factorization.

22310111221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 22310111221 its reverse (12211101322), we get a palindrome (34521212543).

The spelling of 22310111221 in words is "twenty-two billion, three hundred ten million, one hundred eleven thousand, two hundred twenty-one".