23222001121021 has 2 divisors, whose sum is σ = 23222001121022. Its totient is φ = 23222001121020.

The previous prime is 23222001120961. The next prime is 23222001121037. The reversal of 23222001121021 is 12012110022232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13319682348996 + 9902318772025 = 3649614^2 + 3146795^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23222001121021 is a prime.

It is a super-2 number, since 2×23222001121021² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23222001121021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23222001121321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11611000560510 + 11611000560511.

It is an arithmetic number, because the mean of its divisors is an integer number (11611000560511).

Almost surely, 2^{23222001121021} is an apocalyptic number.

It is an amenable number.

23222001121021 is a deficient number, since it is larger than the sum of its proper divisors (1).

23222001121021 is an equidigital number, since it uses as much as digits as its factorization.

23222001121021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 23222001121021 its reverse (12012110022232), we get a palindrome (35234111143253).

The spelling of 23222001121021 in words is "twenty-three trillion, two hundred twenty-two billion, one million, one hundred twenty-one thousand, twenty-one".