1210020321231 has 16 divisors (see below), whose sum is σ = 1809376185600. Its totient is φ = 799141144824.

The previous prime is 1210020321217. The next prime is 1210020321281. The reversal of 1210020321231 is 1321230200121.

1210020321231 is a `hidden beast` number, since 1 + 210 + 0 + 203 + 21 + 231 = 666.

It is not a de Polignac number, because 1210020321231 - 2¹⁹ = 1210019796943 is a prime.

It is a super-2 number, since 2×1210020321231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210020321281) 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, 209415651 + ... + 209421428.

It is an arithmetic number, because the mean of its divisors is an integer number (113086011600).

Almost surely, 2^{1210020321231} is an apocalyptic number.

1210020321231 is a deficient number, since it is larger than the sum of its proper divisors (599355864369).

1210020321231 is a wasteful number, since it uses less digits than its factorization.

1210020321231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418837195 (or 418837189 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1210020321231 its reverse (1321230200121), we get a palindrome (2531250521352).

The spelling of 1210020321231 in words is "one trillion, two hundred ten billion, twenty million, three hundred twenty-one thousand, two hundred thirty-one".