212212021220001 has 48 divisors (see below), whose sum is σ = 347291186186880. Its totient is φ = 123731272431360.

The previous prime is 212212021219967. The next prime is 212212021220021. The reversal of 212212021220001 is 100022120212212.

It is a happy number.

212212021220001 is a `hidden beast` number, since 21 + 221 + 202 + 1 + 220 + 0 + 0 + 1 = 666.

It is not a de Polignac number, because 212212021220001 - 2⁷ = 212212021219873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212212021220021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 325145565 + ... + 325797578.

It is an arithmetic number, because the mean of its divisors is an integer number (7235233045560).

Almost surely, 2^{212212021220001} is an apocalyptic number.

It is an amenable number.

212212021220001 is a deficient number, since it is larger than the sum of its proper divisors (135079164966879).

212212021220001 is a wasteful number, since it uses less digits than its factorization.

212212021220001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650943286 (or 650943283 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 212212021220001 its reverse (100022120212212), we get a palindrome (312234141432213).

The spelling of 212212021220001 in words is "two hundred twelve trillion, two hundred twelve billion, twenty-one million, two hundred twenty thousand, one".