222221312125201 has 2 divisors, whose sum is σ = 222221312125202. Its totient is φ = 222221312125200.

The previous prime is 222221312125147. The next prime is 222221312125229. The reversal of 222221312125201 is 102521213122222.

It is a happy number.

It is an a-pointer prime, because the next prime (222221312125229) can be obtained adding 222221312125201 to its sum of digits (28).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 179704078890625 + 42517233234576 = 13405375^2 + 6520524^2 .

It is a cyclic number.

It is not a de Polignac number, because 222221312125201 - 2¹⁵ = 222221312092433 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 222221312125201.

It is not a weakly prime, because it can be changed into another prime (222221312125231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111110656062600 + 111110656062601.

It is an arithmetic number, because the mean of its divisors is an integer number (111110656062601).

Almost surely, 2^{222221312125201} is an apocalyptic number.

It is an amenable number.

222221312125201 is a deficient number, since it is larger than the sum of its proper divisors (1).

222221312125201 is an equidigital number, since it uses as much as digits as its factorization.

222221312125201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 28.

Adding to 222221312125201 its reverse (102521213122222), we get a palindrome (324742525247423).

The spelling of 222221312125201 in words is "two hundred twenty-two trillion, two hundred twenty-one billion, three hundred twelve million, one hundred twenty-five thousand, two hundred one".