22222020211121 has 2 divisors, whose sum is σ = 22222020211122. Its totient is φ = 22222020211120.

The previous prime is 22222020211093. The next prime is 22222020211141. The reversal of 22222020211121 is 12111202022222.

It is an a-pointer prime, because the next prime (22222020211141) can be obtained adding 22222020211121 to its sum of digits (20).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22115048696896 + 106971514225 = 4702664^2 + 327065^2 .

It is a cyclic number.

It is not a de Polignac number, because 22222020211121 - 2³⁰ = 22220946469297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22222020211093 and 22222020211102.

It is not a weakly prime, because it can be changed into another prime (22222020211141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11111010105560 + 11111010105561.

It is an arithmetic number, because the mean of its divisors is an integer number (11111010105561).

Almost surely, 2^{22222020211121} is an apocalyptic number.

It is an amenable number.

22222020211121 is a deficient number, since it is larger than the sum of its proper divisors (1).

22222020211121 is an equidigital number, since it uses as much as digits as its factorization.

22222020211121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 22222020211121 its reverse (12111202022222), we get a palindrome (34333222233343).

The spelling of 22222020211121 in words is "twenty-two trillion, two hundred twenty-two billion, twenty million, two hundred eleven thousand, one hundred twenty-one".