211001100989 has 4 divisors (see below), whose sum is σ = 241144115424. Its totient is φ = 180858086556.

The previous prime is 211001100971. The next prime is 211001101019. The reversal of 211001100989 is 989001100112.

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 not a de Polignac number, because 211001100989 - 2²⁴ = 210984323773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211001100389) 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, 15071507207 + ... + 15071507220.

It is an arithmetic number, because the mean of its divisors is an integer number (60286028856).

Almost surely, 2^211001100989 is an apocalyptic number.

It is an amenable number.

211001100989 is a deficient number, since it is larger than the sum of its proper divisors (30143014435).

211001100989 is an equidigital number, since it uses as much as digits as its factorization.

211001100989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30143014434.

The product of its (nonzero) digits is 1296, while the sum is 32.

The spelling of 211001100989 in words is "two hundred eleven billion, one million, one hundred thousand, nine hundred eighty-nine".