12112012211987 has 2 divisors, whose sum is σ = 12112012211988. Its totient is φ = 12112012211986.

The previous prime is 12112012211977. The next prime is 12112012212017. The reversal of 12112012211987 is 78911221021121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12112012211987 - 2¹⁴ = 12112012195603 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12112012211987.

It is not a weakly prime, because it can be changed into another prime (12112012211977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6056006105993 + 6056006105994.

It is an arithmetic number, because the mean of its divisors is an integer number (6056006105994).

Almost surely, 2^{12112012211987} is an apocalyptic number.

12112012211987 is a deficient number, since it is larger than the sum of its proper divisors (1).

12112012211987 is an equidigital number, since it uses as much as digits as its factorization.

12112012211987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 38.

The spelling of 12112012211987 in words is "twelve trillion, one hundred twelve billion, twelve million, two hundred eleven thousand, nine hundred eighty-seven".