222100112222201 has 4 divisors (see below), whose sum is σ = 224299123234404. Its totient is φ = 219901101210000.

The previous prime is 222100112222161. The next prime is 222100112222213. The reversal of 222100112222201 is 102222211001222.

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 213450931201600 + 8649181020601 = 14609960^2 + 2940949^2 .

It is a cyclic number.

It is not a de Polignac number, because 222100112222201 - 2¹⁰ = 222100112221177 is a prime.

It is a super-2 number, since 2×222100112222201² (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 (222100112222291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1099505505950 + ... + 1099505506151.

It is an arithmetic number, because the mean of its divisors is an integer number (56074780808601).

Almost surely, 2^{222100112222201} is an apocalyptic number.

It is an amenable number.

222100112222201 is a deficient number, since it is larger than the sum of its proper divisors (2199011012203).

222100112222201 is a wasteful number, since it uses less digits than its factorization.

222100112222201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2199011012202.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 222100112222201 its reverse (102222211001222), we get a palindrome (324322323223423).

The spelling of 222100112222201 in words is "two hundred twenty-two trillion, one hundred billion, one hundred twelve million, two hundred twenty-two thousand, two hundred one".