22221112000121 has 2 divisors, whose sum is σ = 22221112000122. Its totient is φ = 22221112000120.

The previous prime is 22221112000111. The next prime is 22221112000169. The reversal of 22221112000121 is 12100021112222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18807929649721 + 3413182350400 = 4336811^2 + 1847480^2 .

It is a cyclic number.

It is not a de Polignac number, because 22221112000121 - 2⁶ = 22221112000057 is a prime.

It is a super-3 number, since 3×22221112000121³ (a number of 41 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22221112000121.

It is not a weakly prime, because it can be changed into another prime (22221112000111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11110556000060 + 11110556000061.

It is an arithmetic number, because the mean of its divisors is an integer number (11110556000061).

Almost surely, 2^{22221112000121} is an apocalyptic number.

It is an amenable number.

22221112000121 is a deficient number, since it is larger than the sum of its proper divisors (1).

22221112000121 is an equidigital number, since it uses as much as digits as its factorization.

22221112000121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 22221112000121 its reverse (12100021112222), we get a palindrome (34321133112343).

The spelling of 22221112000121 in words is "twenty-two trillion, two hundred twenty-one billion, one hundred twelve million, one hundred twenty-one", and thus it is an aban number.