22110122212121 has 2 divisors, whose sum is σ = 22110122212122. Its totient is φ = 22110122212120.

The previous prime is 22110122212093. The next prime is 22110122212127. The reversal of 22110122212121 is 12121222101122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19689409425625 + 2420712786496 = 4437275^2 + 1555864^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22110122212121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22110122212093 and 22110122212102.

It is not a weakly prime, because it can be changed into another prime (22110122212127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11055061106060 + 11055061106061.

It is an arithmetic number, because the mean of its divisors is an integer number (11055061106061).

Almost surely, 2^{22110122212121} is an apocalyptic number.

It is an amenable number.

22110122212121 is a deficient number, since it is larger than the sum of its proper divisors (1).

22110122212121 is an equidigital number, since it uses as much as digits as its factorization.

22110122212121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 22110122212121 its reverse (12121222101122), we get a palindrome (34231344313243).

The spelling of 22110122212121 in words is "twenty-two trillion, one hundred ten billion, one hundred twenty-two million, two hundred twelve thousand, one hundred twenty-one".