22211001210221 has 2 divisors, whose sum is σ = 22211001210222. Its totient is φ = 22211001210220.

The previous prime is 22211001210163. The next prime is 22211001210257. The reversal of 22211001210221 is 12201210011222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13905336588196 + 8305664622025 = 3728986^2 + 2881955^2 .

It is a cyclic number.

It is not a de Polignac number, because 22211001210221 - 2³⁰ = 22209927468397 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22211001210221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22211001210821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11105500605110 + 11105500605111.

It is an arithmetic number, because the mean of its divisors is an integer number (11105500605111).

Almost surely, 2^{22211001210221} is an apocalyptic number.

It is an amenable number.

22211001210221 is a deficient number, since it is larger than the sum of its proper divisors (1).

22211001210221 is an equidigital number, since it uses as much as digits as its factorization.

22211001210221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 22211001210221 its reverse (12201210011222), we get a palindrome (34412211221443).

The spelling of 22211001210221 in words is "twenty-two trillion, two hundred eleven billion, one million, two hundred ten thousand, two hundred twenty-one".