22021120002121 has 2 divisors, whose sum is σ = 22021120002122. Its totient is φ = 22021120002120.

The previous prime is 22021120002097. The next prime is 22021120002127. The reversal of 22021120002121 is 12120002112022.

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., 16134770609721 + 5886349392400 = 4016811^2 + 2426180^2 .

It is a cyclic number.

It is not a de Polignac number, because 22021120002121 - 2³³ = 22012530067529 is a prime.

It is a super-2 number, since 2×22021120002121² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22021120002095 and 22021120002104.

It is not a weakly prime, because it can be changed into another prime (22021120002127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11010560001060 + 11010560001061.

It is an arithmetic number, because the mean of its divisors is an integer number (11010560001061).

Almost surely, 2^{22021120002121} is an apocalyptic number.

It is an amenable number.

22021120002121 is a deficient number, since it is larger than the sum of its proper divisors (1).

22021120002121 is an equidigital number, since it uses as much as digits as its factorization.

22021120002121 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 16.

Adding to 22021120002121 its reverse (12120002112022), we get a palindrome (34141122114143).

The spelling of 22021120002121 in words is "twenty-two trillion, twenty-one billion, one hundred twenty million, two thousand, one hundred twenty-one".