213113212331121 has 12 divisors (see below), whose sum is σ = 308177242044672. Its totient is φ = 141915299600376.

The previous prime is 213113212331101. The next prime is 213113212331141. The reversal of 213113212331121 is 121133212311312.

213113212331121 is a `hidden beast` number, since 2 + 1 + 3 + 1 + 1 + 321 + 2 + 3 + 311 + 21 = 666.

It is an interprime number because it is at equal distance from previous prime (213113212331101) and next prime (213113212331141).

It is not a de Polignac number, because 213113212331121 - 2²⁵ = 213113178776689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213113212331101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13347932161 + ... + 13347948126.

It is an arithmetic number, because the mean of its divisors is an integer number (25681436837056).

Almost surely, 2^{213113212331121} is an apocalyptic number.

It is an amenable number.

213113212331121 is a deficient number, since it is larger than the sum of its proper divisors (95064029713551).

213113212331121 is a wasteful number, since it uses less digits than its factorization.

213113212331121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26695881180 (or 26695881177 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

Adding to 213113212331121 its reverse (121133212311312), we get a palindrome (334246424642433).

The spelling of 213113212331121 in words is "two hundred thirteen trillion, one hundred thirteen billion, two hundred twelve million, three hundred thirty-one thousand, one hundred twenty-one".