211142341121 has 16 divisors (see below), whose sum is σ = 228062984400. Its totient is φ = 194731051008.

The previous prime is 211142341099. The next prime is 211142341213. The reversal of 211142341121 is 121143241112.

It can be written as a sum of positive squares in 8 ways, for example, as 117692908096 + 93449433025 = 343064^2 + 305695^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211142341121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211142341021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 584075 + ... + 873743.

It is an arithmetic number, because the mean of its divisors is an integer number (14253936525).

Almost surely, 2^211142341121 is an apocalyptic number.

It is an amenable number.

211142341121 is a deficient number, since it is larger than the sum of its proper divisors (16920643279).

211142341121 is a wasteful number, since it uses less digits than its factorization.

211142341121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290548.

The product of its digits is 384, while the sum is 23.

Adding to 211142341121 its reverse (121143241112), we get a palindrome (332285582233).

The spelling of 211142341121 in words is "two hundred eleven billion, one hundred forty-two million, three hundred forty-one thousand, one hundred twenty-one".