22210100621 has 2 divisors, whose sum is σ = 22210100622. Its totient is φ = 22210100620.

The previous prime is 22210100599. The next prime is 22210100639. The reversal of 22210100621 is 12600101222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14259703396 + 7950397225 = 119414^2 + 89165^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22210100621 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22210100621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22210150621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11105050310 + 11105050311.

It is an arithmetic number, because the mean of its divisors is an integer number (11105050311).

Almost surely, 2^22210100621 is an apocalyptic number.

It is an amenable number.

22210100621 is a deficient number, since it is larger than the sum of its proper divisors (1).

22210100621 is an equidigital number, since it uses as much as digits as its factorization.

22210100621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 22210100621 its reverse (12600101222), we get a palindrome (34810201843).

The spelling of 22210100621 in words is "twenty-two billion, two hundred ten million, one hundred thousand, six hundred twenty-one".