2131300212321 has 16 divisors (see below), whose sum is σ = 3247809840000. Its totient is φ = 1217842981248.

The previous prime is 2131300212319. The next prime is 2131300212341. The reversal of 2131300212321 is 1232120031312.

It is not a de Polignac number, because 2131300212321 - 2¹ = 2131300212319 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (2131300212341) 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, 1169646 + ... + 2372903.

It is an arithmetic number, because the mean of its divisors is an integer number (202988115000).

Almost surely, 2^{2131300212321} is an apocalyptic number.

2131300212321 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2131300212321 is a deficient number, since it is larger than the sum of its proper divisors (1116509627679).

2131300212321 is a wasteful number, since it uses less digits than its factorization.

2131300212321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3571208.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 2131300212321 its reverse (1232120031312), we get a palindrome (3363420243633).

The spelling of 2131300212321 in words is "two trillion, one hundred thirty-one billion, three hundred million, two hundred twelve thousand, three hundred twenty-one".