211330320212131 has 4 divisors (see below), whose sum is σ = 211807363824792. Its totient is φ = 210853276599472.

The previous prime is 211330320212129. The next prime is 211330320212177. The reversal of 211330320212131 is 131212023033112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 211330320212131 - 2¹ = 211330320212129 is a prime.

It is a super-2 number, since 2×211330320212131² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211330320212096 and 211330320212105.

It is not an unprimeable number, because it can be changed into a prime (211330320252131) 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, 238521805666 + ... + 238521806551.

It is an arithmetic number, because the mean of its divisors is an integer number (52951840956198).

Almost surely, 2^{211330320212131} is an apocalyptic number.

211330320212131 is a deficient number, since it is larger than the sum of its proper divisors (477043612661).

211330320212131 is an equidigital number, since it uses as much as digits as its factorization.

211330320212131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477043612660.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 211330320212131 its reverse (131212023033112), we get a palindrome (342542343245243).

The spelling of 211330320212131 in words is "two hundred eleven trillion, three hundred thirty billion, three hundred twenty million, two hundred twelve thousand, one hundred thirty-one".