212211122001 has 4 divisors (see below), whose sum is σ = 282948162672. Its totient is φ = 141474081332.

The previous prime is 212211121921. The next prime is 212211122027. The reversal of 212211122001 is 100221112212.

212211122001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 212211122001 - 2⁹ = 212211121489 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (212211122051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35368520331 + ... + 35368520336.

It is an arithmetic number, because the mean of its divisors is an integer number (70737040668).

Almost surely, 2^212211122001 is an apocalyptic number.

It is an amenable number.

212211122001 is a deficient number, since it is larger than the sum of its proper divisors (70737040671).

212211122001 is an equidigital number, since it uses as much as digits as its factorization.

212211122001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70737040670.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 212211122001 its reverse (100221112212), we get a palindrome (312432234213).

The spelling of 212211122001 in words is "two hundred twelve billion, two hundred eleven million, one hundred twenty-two thousand, one".