3111212121247 has 2 divisors, whose sum is σ = 3111212121248. Its totient is φ = 3111212121246.

The previous prime is 3111212121209. The next prime is 3111212121299. The reversal of 3111212121247 is 7421212121113.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3111212121247 - 2²³ = 3111203732639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3111212121047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1555606060623 + 1555606060624.

It is an arithmetic number, because the mean of its divisors is an integer number (1555606060624).

Almost surely, 2^{3111212121247} is an apocalyptic number.

3111212121247 is a deficient number, since it is larger than the sum of its proper divisors (1).

3111212121247 is an equidigital number, since it uses as much as digits as its factorization.

3111212121247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1344, while the sum is 28.

The spelling of 3111212121247 in words is "three trillion, one hundred eleven billion, two hundred twelve million, one hundred twenty-one thousand, two hundred forty-seven".