211112222201 has 2 divisors, whose sum is σ = 211112222202. Its totient is φ = 211112222200.

The previous prime is 211112222107. The next prime is 211112222273. The reversal of 211112222201 is 102222211112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 201555204601 + 9557017600 = 448949^2 + 97760^2 .

It is a cyclic number.

It is not a de Polignac number, because 211112222201 - 2²⁶ = 211045113337 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211112222201.

It is not a weakly prime, because it can be changed into another prime (211112222501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105556111100 + 105556111101.

It is an arithmetic number, because the mean of its divisors is an integer number (105556111101).

Almost surely, 2^211112222201 is an apocalyptic number.

It is an amenable number.

211112222201 is a deficient number, since it is larger than the sum of its proper divisors (1).

211112222201 is an equidigital number, since it uses as much as digits as its factorization.

211112222201 is an odious number, because the sum of its binary digits is odd.

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

Adding to 211112222201 its reverse (102222211112), we get a palindrome (313334433313).

The spelling of 211112222201 in words is "two hundred eleven billion, one hundred twelve million, two hundred twenty-two thousand, two hundred one".