211130341021 has 6 divisors (see below), whose sum is σ = 216990790170.
Its totient is φ = 205424114256.
The previous prime is 211130341007. The next prime is 211130341039. The reversal of 211130341021 is 120143031112.
It can be written as a sum of positive squares in 3 ways, for example, as 71094223225 + 140036117796 = 266635^2 + 374214^2
It is not a de Polignac number, because 211130341021 - 217 = 211130209949 is a prime.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 211130341021.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (211130341091) by changing a digit.
It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 77109786 + ... + 77112523.
It is an arithmetic number, because the mean of its divisors is an integer number (36165131695).
Almost surely, 2211130341021 is an apocalyptic number.
It is an amenable number.
211130341021 is a deficient number, since it is larger than the sum of its proper divisors (5860449149).
211130341021 is an equidigital number, since it uses as much as digits as its factorization.
211130341021 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 154222383 (or 154222346 counting only the distinct ones).
The product of its (nonzero) digits is 144, while the sum is 19.
Adding to 211130341021 its reverse (120143031112), we get a palindrome (331273372133).
The spelling of 211130341021 in words is "two hundred eleven billion, one hundred thirty million, three hundred forty-one thousand, twenty-one".