211141231021 has 16 divisors (see below), whose sum is σ = 255523904640. Its totient is φ = 170315573760.

The previous prime is 211141230977. The next prime is 211141231051. The reversal of 211141231021 is 120132141112.

It is a cyclic number.

It is not a de Polignac number, because 211141231021 - 2¹¹ = 211141228973 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211141231021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211141231051) 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, 1199385 + ... + 1364113.

It is an arithmetic number, because the mean of its divisors is an integer number (15970244040).

Almost surely, 2^211141231021 is an apocalyptic number.

It is an amenable number.

211141231021 is a deficient number, since it is larger than the sum of its proper divisors (44382673619).

211141231021 is a wasteful number, since it uses less digits than its factorization.

211141231021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175524.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 211141231021 its reverse (120132141112), we get a palindrome (331273372133).

The spelling of 211141231021 in words is "two hundred eleven billion, one hundred forty-one million, two hundred thirty-one thousand, twenty-one".