12021001313231 has 2 divisors, whose sum is σ = 12021001313232. Its totient is φ = 12021001313230.

The previous prime is 12021001313159. The next prime is 12021001313263. The reversal of 12021001313231 is 13231310012021.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12021001313231 - 2¹⁰ = 12021001312207 is a prime.

It is a super-2 number, since 2×12021001313231² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12021001313281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010500656615 + 6010500656616.

It is an arithmetic number, because the mean of its divisors is an integer number (6010500656616).

Almost surely, 2^{12021001313231} is an apocalyptic number.

12021001313231 is a deficient number, since it is larger than the sum of its proper divisors (1).

12021001313231 is an equidigital number, since it uses as much as digits as its factorization.

12021001313231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 12021001313231 its reverse (13231310012021), we get a palindrome (25252311325252).

The spelling of 12021001313231 in words is "twelve trillion, twenty-one billion, one million, three hundred thirteen thousand, two hundred thirty-one".