22331020121 has 2 divisors, whose sum is σ = 22331020122. Its totient is φ = 22331020120.

The previous prime is 22331020067. The next prime is 22331020177. The reversal of 22331020121 is 12102013322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21481006096 + 850014025 = 146564^2 + 29155^2 .

It is a cyclic number.

It is not a de Polignac number, because 22331020121 - 2¹⁰ = 22331019097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22331020121.

It is not a weakly prime, because it can be changed into another prime (22331026121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11165510060 + 11165510061.

It is an arithmetic number, because the mean of its divisors is an integer number (11165510061).

Almost surely, 2^22331020121 is an apocalyptic number.

It is an amenable number.

22331020121 is a deficient number, since it is larger than the sum of its proper divisors (1).

22331020121 is an equidigital number, since it uses as much as digits as its factorization.

22331020121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 22331020121 its reverse (12102013322), we get a palindrome (34433033443).

The spelling of 22331020121 in words is "twenty-two billion, three hundred thirty-one million, twenty thousand, one hundred twenty-one".