12021001320131 has 4 divisors (see below), whose sum is σ = 12021014496192. Its totient is φ = 12020988144072.

The previous prime is 12021001320101. The next prime is 12021001320149. The reversal of 12021001320131 is 13102310012021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12021001320131 is a prime.

It is a super-2 number, since 2×12021001320131² (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 (12021001320101) 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, 5108816 + ... + 7081101.

It is an arithmetic number, because the mean of its divisors is an integer number (3005253624048).

Almost surely, 2^{12021001320131} is an apocalyptic number.

12021001320131 is a deficient number, since it is larger than the sum of its proper divisors (13176061).

12021001320131 is an equidigital number, since it uses as much as digits as its factorization.

12021001320131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13176060.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 12021001320131 its reverse (13102310012021), we get a palindrome (25123311332152).

The spelling of 12021001320131 in words is "twelve trillion, twenty-one billion, one million, three hundred twenty thousand, one hundred thirty-one".