1200112111291 has 2 divisors, whose sum is σ = 1200112111292. Its totient is φ = 1200112111290.

The previous prime is 1200112111277. The next prime is 1200112111301. The reversal of 1200112111291 is 1921112110021.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1200112111291 - 2¹¹ = 1200112109243 is a prime.

It is not a weakly prime, because it can be changed into another prime (1200112111091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600056055645 + 600056055646.

It is an arithmetic number, because the mean of its divisors is an integer number (600056055646).

Almost surely, 2^{1200112111291} is an apocalyptic number.

1200112111291 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200112111291 is an equidigital number, since it uses as much as digits as its factorization.

1200112111291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 22.

The spelling of 1200112111291 in words is "one trillion, two hundred billion, one hundred twelve million, one hundred eleven thousand, two hundred ninety-one".