22102111221121 has 2 divisors, whose sum is σ = 22102111221122. Its totient is φ = 22102111221120.

The previous prime is 22102111221083. The next prime is 22102111221133. The reversal of 22102111221121 is 12112211120122.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11662498201600 + 10439613019521 = 3415040^2 + 3231039^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22102111221121 is a prime.

It is not a weakly prime, because it can be changed into another prime (22102111261121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11051055610560 + 11051055610561.

It is an arithmetic number, because the mean of its divisors is an integer number (11051055610561).

Almost surely, 2^{22102111221121} is an apocalyptic number.

It is an amenable number.

22102111221121 is a deficient number, since it is larger than the sum of its proper divisors (1).

22102111221121 is an equidigital number, since it uses as much as digits as its factorization.

22102111221121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 22102111221121 its reverse (12112211120122), we get a palindrome (34214322341243).

The spelling of 22102111221121 in words is "twenty-two trillion, one hundred two billion, one hundred eleven million, two hundred twenty-one thousand, one hundred twenty-one".