211100122001 has 4 divisors (see below), whose sum is σ = 211150019904. Its totient is φ = 211050224100.

The previous prime is 211100121977. The next prime is 211100122007. The reversal of 211100122001 is 100221001112.

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 211100122001 - 2¹⁴ = 211100105617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211100122007) 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 3 ways as a sum of consecutive naturals, for example, 24942605 + ... + 24951066.

It is an arithmetic number, because the mean of its divisors is an integer number (52787504976).

Almost surely, 2^211100122001 is an apocalyptic number.

It is an amenable number.

211100122001 is a deficient number, since it is larger than the sum of its proper divisors (49897903).

211100122001 is an equidigital number, since it uses as much as digits as its factorization.

211100122001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49897902.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 211100122001 its reverse (100221001112), we get a palindrome (311321123113).

The spelling of 211100122001 in words is "two hundred eleven billion, one hundred million, one hundred twenty-two thousand, one".