22202221012021 has 2 divisors, whose sum is σ = 22202221012022. Its totient is φ = 22202221012020.

The previous prime is 22202221011983. The next prime is 22202221012033. The reversal of 22202221012021 is 12021012220222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20755586988900 + 1446634023121 = 4555830^2 + 1202761^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22202221012021 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22202221012021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22202221012051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11101110506010 + 11101110506011.

It is an arithmetic number, because the mean of its divisors is an integer number (11101110506011).

Almost surely, 2^{22202221012021} is an apocalyptic number.

It is an amenable number.

22202221012021 is a deficient number, since it is larger than the sum of its proper divisors (1).

22202221012021 is an equidigital number, since it uses as much as digits as its factorization.

22202221012021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 22202221012021 its reverse (12021012220222), we get a palindrome (34223233232243).

The spelling of 22202221012021 in words is "twenty-two trillion, two hundred two billion, two hundred twenty-one million, twelve thousand, twenty-one".