212222111201 has 4 divisors (see below), whose sum is σ = 212245347012. Its totient is φ = 212198875392.

The previous prime is 212222111141. The next prime is 212222111263. The reversal of 212222111201 is 102111222212.

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 25217757601 + 187004353600 = 158801^2 + 432440^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212222111201 is a prime.

It is a super-3 number, since 3×212222111201³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 212222111201.

It is not an unprimeable number, because it can be changed into a prime (212222110201) 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, 11604200 + ... + 11622473.

It is an arithmetic number, because the mean of its divisors is an integer number (53061336753).

Almost surely, 2^212222111201 is an apocalyptic number.

It is an amenable number.

212222111201 is a deficient number, since it is larger than the sum of its proper divisors (23235811).

212222111201 is an equidigital number, since it uses as much as digits as its factorization.

212222111201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23235810.

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

Adding to 212222111201 its reverse (102111222212), we get a palindrome (314333333413).

The spelling of 212222111201 in words is "two hundred twelve billion, two hundred twenty-two million, one hundred eleven thousand, two hundred one".