212211220112001 has 28 divisors (see below), whose sum is σ = 347095942523280. Its totient is φ = 128612860669080.

The previous prime is 212211220111987. The next prime is 212211220112027. The reversal of 212211220112001 is 100211022112212.

212211220112001 is a `hidden beast` number, since 21 + 2 + 211 + 220 + 11 + 200 + 1 = 666.

It is not a de Polignac number, because 212211220112001 - 2⁹ = 212211220111489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212211220116001) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 13231767771 + ... + 13231783808.

Almost surely, 2^{212211220112001} is an apocalyptic number.

It is an amenable number.

212211220112001 is a deficient number, since it is larger than the sum of its proper divisors (134884722411279).

212211220112001 is an equidigital number, since it uses as much as digits as its factorization.

212211220112001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26463551608 (or 26463551593 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 212211220112001 its reverse (100211022112212), we get a palindrome (312422242224213).

The spelling of 212211220112001 in words is "two hundred twelve trillion, two hundred eleven billion, two hundred twenty million, one hundred twelve thousand, one".