222212210021201 has 2 divisors, whose sum is σ = 222212210021202. Its totient is φ = 222212210021200.

The previous prime is 222212210021189. The next prime is 222212210021227. The reversal of 222212210021201 is 102120012212222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 211180186561600 + 11032023459601 = 14532040^2 + 3321449^2 .

It is a cyclic number.

It is not a de Polignac number, because 222212210021201 - 2²⁶ = 222212142912337 is a prime.

It is not a weakly prime, because it can be changed into another prime (222212210021281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111106105010600 + 111106105010601.

It is an arithmetic number, because the mean of its divisors is an integer number (111106105010601).

Almost surely, 2^{222212210021201} is an apocalyptic number.

It is an amenable number.

222212210021201 is a deficient number, since it is larger than the sum of its proper divisors (1).

222212210021201 is an equidigital number, since it uses as much as digits as its factorization.

222212210021201 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 20.

Adding to 222212210021201 its reverse (102120012212222), we get a palindrome (324332222233423).

The spelling of 222212210021201 in words is "two hundred twenty-two trillion, two hundred twelve billion, two hundred ten million, twenty-one thousand, two hundred one".