22111102121161 has 2 divisors, whose sum is σ = 22111102121162. Its totient is φ = 22111102121160.

The previous prime is 22111102121131. The next prime is 22111102121179. The reversal of 22111102121161 is 16112120111122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20789441487936 + 1321660633225 = 4559544^2 + 1149635^2 .

It is a cyclic number.

It is not a de Polignac number, because 22111102121161 - 2⁹ = 22111102120649 is a prime.

It is not a weakly prime, because it can be changed into another prime (22111102121131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11055551060580 + 11055551060581.

It is an arithmetic number, because the mean of its divisors is an integer number (11055551060581).

Almost surely, 2^{22111102121161} is an apocalyptic number.

It is an amenable number.

22111102121161 is a deficient number, since it is larger than the sum of its proper divisors (1).

22111102121161 is an equidigital number, since it uses as much as digits as its factorization.

22111102121161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 22.

Adding to 22111102121161 its reverse (16112120111122), we get a palindrome (38223222232283).

The spelling of 22111102121161 in words is "twenty-two trillion, one hundred eleven billion, one hundred two million, one hundred twenty-one thousand, one hundred sixty-one".