12031120001 has 2 divisors, whose sum is σ = 12031120002. Its totient is φ = 12031120000.

The previous prime is 12031119983. The next prime is 12031120007. The reversal of 12031120001 is 10002113021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9006010000 + 3025110001 = 94900^2 + 55001^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12031120001 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (12031120007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6015560000 + 6015560001.

It is an arithmetic number, because the mean of its divisors is an integer number (6015560001).

Almost surely, 2^12031120001 is an apocalyptic number.

It is an amenable number.

12031120001 is a deficient number, since it is larger than the sum of its proper divisors (1).

12031120001 is an equidigital number, since it uses as much as digits as its factorization.

12031120001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 12031120001 its reverse (10002113021), we get a palindrome (22033233022).

The spelling of 12031120001 in words is "twelve billion, thirty-one million, one hundred twenty thousand, one".