222111212201 has 4 divisors (see below), whose sum is σ = 222135477252. Its totient is φ = 222086947152.

The previous prime is 222111212179. The next prime is 222111212207. The reversal of 222111212201 is 102212111222.

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 140115462400 + 81995749801 = 374320^2 + 286349^2 .

It is a cyclic number.

It is not a de Polignac number, because 222111212201 - 2¹⁰ = 222111211177 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 222111212201.

It is not an unprimeable number, because it can be changed into a prime (222111212207) 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, 12118790 + ... + 12137103.

It is an arithmetic number, because the mean of its divisors is an integer number (55533869313).

Almost surely, 2^222111212201 is an apocalyptic number.

It is an amenable number.

222111212201 is a deficient number, since it is larger than the sum of its proper divisors (24265051).

222111212201 is an equidigital number, since it uses as much as digits as its factorization.

222111212201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24265050.

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

Adding to 222111212201 its reverse (102212111222), we get a palindrome (324323323423).

The spelling of 222111212201 in words is "two hundred twenty-two billion, one hundred eleven million, two hundred twelve thousand, two hundred one".