112112111211209 has 2 divisors, whose sum is σ = 112112111211210. Its totient is φ = 112112111211208.

The previous prime is 112112111211193. The next prime is 112112111211229. The reversal of 112112111211209 is 902112111211211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64349195022025 + 47762916189184 = 8021795^2 + 6911072^2 .

It is a cyclic number.

It is not a de Polignac number, because 112112111211209 - 2⁴ = 112112111211193 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (112112111211229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56056055605604 + 56056055605605.

It is an arithmetic number, because the mean of its divisors is an integer number (56056055605605).

Almost surely, 2^{112112111211209} is an apocalyptic number.

It is an amenable number.

112112111211209 is a deficient number, since it is larger than the sum of its proper divisors (1).

112112111211209 is an equidigital number, since it uses as much as digits as its factorization.

112112111211209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 26.

The spelling of 112112111211209 in words is "one hundred twelve trillion, one hundred twelve billion, one hundred eleven million, two hundred eleven thousand, two hundred nine".