12321201021131 has 4 divisors (see below), whose sum is σ = 12321799361592. Its totient is φ = 12320602680672.

The previous prime is 12321201021113. The next prime is 12321201021139. The reversal of 12321201021131 is 13112010212321.

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 12321201021131 - 2²⁶ = 12321133912267 is a prime.

It is a super-2 number, since 2×12321201021131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12321201021139) 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, 299139341 + ... + 299180526.

It is an arithmetic number, because the mean of its divisors is an integer number (3080449840398).

Almost surely, 2^{12321201021131} is an apocalyptic number.

12321201021131 is a deficient number, since it is larger than the sum of its proper divisors (598340461).

12321201021131 is an equidigital number, since it uses as much as digits as its factorization.

12321201021131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598340460.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 12321201021131 its reverse (13112010212321), we get a palindrome (25433211233452).

The spelling of 12321201021131 in words is "twelve trillion, three hundred twenty-one billion, two hundred one million, twenty-one thousand, one hundred thirty-one".