222112222111201 has 4 divisors (see below), whose sum is σ = 222113912838804. Its totient is φ = 222110531383600.

The previous prime is 222112222111177. The next prime is 222112222111289. The reversal of 222112222111201 is 102111222211222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 217140147176976 + 4972074934225 = 14735676^2 + 2229815^2 .

It is a cyclic number.

It is not a de Polignac number, because 222112222111201 - 2²⁷ = 222112087893473 is a prime.

It is a super-2 number, since 2×222112222111201² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222112222112201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 845166730 + ... + 845429491.

It is an arithmetic number, because the mean of its divisors is an integer number (55528478209701).

Almost surely, 2^{222112222111201} is an apocalyptic number.

It is an amenable number.

222112222111201 is a deficient number, since it is larger than the sum of its proper divisors (1690727603).

222112222111201 is a wasteful number, since it uses less digits than its factorization.

222112222111201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1690727602.

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 222112222111201 its reverse (102111222211222), we get a palindrome (324223444322423).

The spelling of 222112222111201 in words is "two hundred twenty-two trillion, one hundred twelve billion, two hundred twenty-two million, one hundred eleven thousand, two hundred one".