222102022112221 has 2 divisors, whose sum is σ = 222102022112222. Its totient is φ = 222102022112220.

The previous prime is 222102022112213. The next prime is 222102022112231. The reversal of 222102022112221 is 122211220201222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 217673581675225 + 4428440436996 = 14753765^2 + 2104386^2 .

It is a cyclic number.

It is not a de Polignac number, because 222102022112221 - 2³ = 222102022112213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222102022112192 and 222102022112201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222102022112231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111051011056110 + 111051011056111.

It is an arithmetic number, because the mean of its divisors is an integer number (111051011056111).

Almost surely, 2^{222102022112221} is an apocalyptic number.

It is an amenable number.

222102022112221 is a deficient number, since it is larger than the sum of its proper divisors (1).

222102022112221 is an equidigital number, since it uses as much as digits as its factorization.

222102022112221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 222102022112221 its reverse (122211220201222), we get a palindrome (344313242313443).

The spelling of 222102022112221 in words is "two hundred twenty-two trillion, one hundred two billion, twenty-two million, one hundred twelve thousand, two hundred twenty-one".