22202212111021 has 2 divisors, whose sum is σ = 22202212111022. Its totient is φ = 22202212111020.

The previous prime is 22202212110959. The next prime is 22202212111061. The reversal of 22202212111021 is 12011121220222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19585537058025 + 2616675052996 = 4425555^2 + 1617614^2 .

It is a cyclic number.

It is not a de Polignac number, because 22202212111021 - 2¹⁹ = 22202211586733 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22202212111021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22202212111061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11101106055510 + 11101106055511.

It is an arithmetic number, because the mean of its divisors is an integer number (11101106055511).

Almost surely, 2^{22202212111021} is an apocalyptic number.

It is an amenable number.

22202212111021 is a deficient number, since it is larger than the sum of its proper divisors (1).

22202212111021 is an equidigital number, since it uses as much as digits as its factorization.

22202212111021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 22202212111021 its reverse (12011121220222), we get a palindrome (34213333331243).

The spelling of 22202212111021 in words is "twenty-two trillion, two hundred two billion, two hundred twelve million, one hundred eleven thousand, twenty-one".