212102220022201 has 4 divisors (see below), whose sum is σ = 212608430571600. Its totient is φ = 211596009472804.

The previous prime is 212102220022183. The next prime is 212102220022207. The reversal of 212102220022201 is 102220022201212.

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 212102220022201 - 2²⁷ = 212102085804473 is a prime.

It is a super-3 number, since 3×212102220022201³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212102220022207) 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, 253105274071 + ... + 253105274908.

It is an arithmetic number, because the mean of its divisors is an integer number (53152107642900).

Almost surely, 2^{212102220022201} is an apocalyptic number.

It is an amenable number.

212102220022201 is a deficient number, since it is larger than the sum of its proper divisors (506210549399).

212102220022201 is an equidigital number, since it uses as much as digits as its factorization.

212102220022201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506210549398.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 212102220022201 its reverse (102220022201212), we get a palindrome (314322242223413).

The spelling of 212102220022201 in words is "two hundred twelve trillion, one hundred two billion, two hundred twenty million, twenty-two thousand, two hundred one".