213031130121 has 24 divisors (see below), whose sum is σ = 309969653760. Its totient is φ = 140981702400.

The previous prime is 213031130089. The next prime is 213031130129. The reversal of 213031130121 is 121031130312.

213031130121 is a `hidden beast` number, since 2 + 1 + 30 + 311 + 301 + 21 = 666.

It is not a de Polignac number, because 213031130121 - 2⁵ = 213031130089 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 213031130094 and 213031130103.

It is not an unprimeable number, because it can be changed into a prime (213031130129) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 694041 + ... + 952761.

It is an arithmetic number, because the mean of its divisors is an integer number (12915402240).

Almost surely, 2^213031130121 is an apocalyptic number.

It is an amenable number.

213031130121 is a deficient number, since it is larger than the sum of its proper divisors (96938523639).

213031130121 is a wasteful number, since it uses less digits than its factorization.

213031130121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259397 (or 259394 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 213031130121 its reverse (121031130312), we get a palindrome (334062260433).

The spelling of 213031130121 in words is "two hundred thirteen billion, thirty-one million, one hundred thirty thousand, one hundred twenty-one".