211000122001 has 4 divisors (see below), whose sum is σ = 222105391600. Its totient is φ = 199894852404.

The previous prime is 211000121987. The next prime is 211000122023. The reversal of 211000122001 is 100221000112.

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 211000122001 - 2⁷ = 211000121873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211000122041) 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, 5552634771 + ... + 5552634808.

It is an arithmetic number, because the mean of its divisors is an integer number (55526347900).

Almost surely, 2^211000122001 is an apocalyptic number.

It is an amenable number.

211000122001 is a deficient number, since it is larger than the sum of its proper divisors (11105269599).

211000122001 is a wasteful number, since it uses less digits than its factorization.

211000122001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11105269598.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 211000122001 its reverse (100221000112), we get a palindrome (311221122113).

The spelling of 211000122001 in words is "two hundred eleven billion, one hundred twenty-two thousand, one".