22102021121 has 2 divisors, whose sum is σ = 22102021122. Its totient is φ = 22102021120.

The previous prime is 22102021061. The next prime is 22102021133. The reversal of 22102021121 is 12112020122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18513412096 + 3588609025 = 136064^2 + 59905^2 .

It is a cyclic number.

It is not a de Polignac number, because 22102021121 - 2⁶ = 22102021057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22102021096 and 22102021105.

It is not a weakly prime, because it can be changed into another prime (22102021021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11051010560 + 11051010561.

It is an arithmetic number, because the mean of its divisors is an integer number (11051010561).

Almost surely, 2^22102021121 is an apocalyptic number.

It is an amenable number.

22102021121 is a deficient number, since it is larger than the sum of its proper divisors (1).

22102021121 is an equidigital number, since it uses as much as digits as its factorization.

22102021121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 22102021121 its reverse (12112020122), we get a palindrome (34214041243).

Subtracting from 22102021121 its reverse (12112020122), we obtain a palindrome (9990000999).

The spelling of 22102021121 in words is "twenty-two billion, one hundred two million, twenty-one thousand, one hundred twenty-one".