12112121947 has 2 divisors, whose sum is σ = 12112121948. Its totient is φ = 12112121946.

The previous prime is 12112121929. The next prime is 12112122017. The reversal of 12112121947 is 74912121121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12112121947 is a prime.

It is not a weakly prime, because it can be changed into another prime (12113121947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6056060973 + 6056060974.

It is an arithmetic number, because the mean of its divisors is an integer number (6056060974).

Almost surely, 2^12112121947 is an apocalyptic number.

12112121947 is a deficient number, since it is larger than the sum of its proper divisors (1).

12112121947 is an equidigital number, since it uses as much as digits as its factorization.

12112121947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 31.

The spelling of 12112121947 in words is "twelve billion, one hundred twelve million, one hundred twenty-one thousand, nine hundred forty-seven".