12012220203131 has 4 divisors (see below), whose sum is σ = 12013609389552. Its totient is φ = 12010831016712.

The previous prime is 12012220203097. The next prime is 12012220203227. The reversal of 12012220203131 is 13130202221021.

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-12012220203131 is a prime.

It is a super-2 number, since 2×12012220203131² (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 (12012220202131) 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, 694580240 + ... + 694597533.

It is an arithmetic number, because the mean of its divisors is an integer number (3003402347388).

Almost surely, 2^{12012220203131} is an apocalyptic number.

12012220203131 is a deficient number, since it is larger than the sum of its proper divisors (1389186421).

12012220203131 is an equidigital number, since it uses as much as digits as its factorization.

12012220203131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1389186420.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 12012220203131 its reverse (13130202221021), we get a palindrome (25142422424152).

The spelling of 12012220203131 in words is "twelve trillion, twelve billion, two hundred twenty million, two hundred three thousand, one hundred thirty-one".