12111231403 has 2 divisors, whose sum is σ = 12111231404. Its totient is φ = 12111231402.

The previous prime is 12111231337. The next prime is 12111231421. The reversal of 12111231403 is 30413211121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12111231403 - 2⁹ = 12111230891 is a prime.

It is not a weakly prime, because it can be changed into another prime (12111232403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6055615701 + 6055615702.

It is an arithmetic number, because the mean of its divisors is an integer number (6055615702).

Almost surely, 2^12111231403 is an apocalyptic number.

12111231403 is a deficient number, since it is larger than the sum of its proper divisors (1).

12111231403 is an equidigital number, since it uses as much as digits as its factorization.

12111231403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 12111231403 its reverse (30413211121), we get a palindrome (42524442524).

The spelling of 12111231403 in words is "twelve billion, one hundred eleven million, two hundred thirty-one thousand, four hundred three".