22111110000121 has 2 divisors, whose sum is σ = 22111110000122. Its totient is φ = 22111110000120.

The previous prime is 22111110000113. The next prime is 22111110000143. The reversal of 22111110000121 is 12100001111122.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17051647044496 + 5059462955625 = 4129364^2 + 2249325^2 .

It is a cyclic number.

It is not a de Polignac number, because 22111110000121 - 2³ = 22111110000113 is a prime.

It is not a weakly prime, because it can be changed into another prime (22111120000121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11055555000060 + 11055555000061.

It is an arithmetic number, because the mean of its divisors is an integer number (11055555000061).

Almost surely, 2^{22111110000121} is an apocalyptic number.

It is an amenable number.

22111110000121 is a deficient number, since it is larger than the sum of its proper divisors (1).

22111110000121 is an equidigital number, since it uses as much as digits as its factorization.

22111110000121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 22111110000121 its reverse (12100001111122), we get a palindrome (34211111111243).

The spelling of 22111110000121 in words is "twenty-two trillion, one hundred eleven billion, one hundred ten million, one hundred twenty-one", and thus it is an aban number.