211331301121 has 4 divisors (see below), whose sum is σ = 222454001200. Its totient is φ = 200208601044.

The previous prime is 211331301061. The next prime is 211331301133. The reversal of 211331301121 is 121103133112.

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 211331301121 - 2¹⁵ = 211331268353 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 11122700059 = 211331301121 / (2 + 1 + 1 + 3 + 3 + 1 + 3 + 0 + 1 + 1 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211331301421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5561350011 + ... + 5561350048.

It is an arithmetic number, because the mean of its divisors is an integer number (55613500300).

Almost surely, 2^211331301121 is an apocalyptic number.

It is an amenable number.

211331301121 is a deficient number, since it is larger than the sum of its proper divisors (11122700079).

211331301121 is a wasteful number, since it uses less digits than its factorization.

211331301121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11122700078.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 211331301121 its reverse (121103133112), we get a palindrome (332434434233).

The spelling of 211331301121 in words is "two hundred eleven billion, three hundred thirty-one million, three hundred one thousand, one hundred twenty-one".