212222111002201 has 4 divisors (see below), whose sum is σ = 213448828407012. Its totient is φ = 210995393597392.

The previous prime is 212222111002163. The next prime is 212222111002211. The reversal of 212222111002201 is 102200111222212.

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 189290846406601 + 22931264595600 = 13758301^2 + 4788660^2 .

It is a cyclic number.

It is not a de Polignac number, because 212222111002201 - 2⁷ = 212222111002073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212222111002211) 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, 613358702146 + ... + 613358702491.

It is an arithmetic number, because the mean of its divisors is an integer number (53362207101753).

Almost surely, 2^{212222111002201} is an apocalyptic number.

It is an amenable number.

212222111002201 is a deficient number, since it is larger than the sum of its proper divisors (1226717404811).

212222111002201 is a wasteful number, since it uses less digits than its factorization.

212222111002201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1226717404810.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 212222111002201 its reverse (102200111222212), we get a palindrome (314422222224413).

The spelling of 212222111002201 in words is "two hundred twelve trillion, two hundred twenty-two billion, one hundred eleven million, two thousand, two hundred one".