12031211133251 has 2 divisors, whose sum is σ = 12031211133252. Its totient is φ = 12031211133250.

The previous prime is 12031211133211. The next prime is 12031211133257. The reversal of 12031211133251 is 15233111213021.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12031211133251 - 2⁶ = 12031211133187 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12031211133251.

It is not a weakly prime, because it can be changed into another prime (12031211133257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6015605566625 + 6015605566626.

It is an arithmetic number, because the mean of its divisors is an integer number (6015605566626).

Almost surely, 2^{12031211133251} is an apocalyptic number.

12031211133251 is a deficient number, since it is larger than the sum of its proper divisors (1).

12031211133251 is an equidigital number, since it uses as much as digits as its factorization.

12031211133251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 26.

Adding to 12031211133251 its reverse (15233111213021), we get a palindrome (27264322346272).

The spelling of 12031211133251 in words is "twelve trillion, thirty-one billion, two hundred eleven million, one hundred thirty-three thousand, two hundred fifty-one".