211001110121 has 8 divisors (see below), whose sum is σ = 218291862600. Its totient is φ = 203711347840.

The previous prime is 211001110097. The next prime is 211001110127. The reversal of 211001110121 is 121011100112.

It can be written as a sum of positive squares in 4 ways, for example, as 27444560896 + 183556549225 = 165664^2 + 428435^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211001110121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211001110127) 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 7 ways as a sum of consecutive naturals, for example, 199715 + ... + 679623.

It is an arithmetic number, because the mean of its divisors is an integer number (27286482825).

Almost surely, 2^211001110121 is an apocalyptic number.

It is an amenable number.

211001110121 is a deficient number, since it is larger than the sum of its proper divisors (7290752479).

211001110121 is a wasteful number, since it uses less digits than its factorization.

211001110121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495099.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 211001110121 its reverse (121011100112), we get a palindrome (332012210233).

The spelling of 211001110121 in words is "two hundred eleven billion, one million, one hundred ten thousand, one hundred twenty-one".