212122122122201 has 4 divisors (see below), whose sum is σ = 213056580810192. Its totient is φ = 211187663434212.

The previous prime is 212122122122191. The next prime is 212122122122219. The reversal of 212122122122201 is 102221221221212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212122122122201 - 2²² = 212122117927897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212122122122291) 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, 467229343655 + ... + 467229344108.

It is an arithmetic number, because the mean of its divisors is an integer number (53264145202548).

Almost surely, 2^{212122122122201} is an apocalyptic number.

It is an amenable number.

212122122122201 is a deficient number, since it is larger than the sum of its proper divisors (934458687991).

212122122122201 is an equidigital number, since it uses as much as digits as its factorization.

212122122122201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934458687990.

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 212122122122201 its reverse (102221221221212), we get a palindrome (314343343343413).

The spelling of 212122122122201 in words is "two hundred twelve trillion, one hundred twenty-two billion, one hundred twenty-two million, one hundred twenty-two thousand, two hundred one".