1200100101191 has 2 divisors, whose sum is σ = 1200100101192. Its totient is φ = 1200100101190.

The previous prime is 1200100101133. The next prime is 1200100101223. The reversal of 1200100101191 is 1911010010021.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1200100101191 - 2¹⁸ = 1200099839047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1200100101091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600050050595 + 600050050596.

It is an arithmetic number, because the mean of its divisors is an integer number (600050050596).

Almost surely, 2^{1200100101191} is an apocalyptic number.

1200100101191 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200100101191 is an equidigital number, since it uses as much as digits as its factorization.

1200100101191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 17.

The spelling of 1200100101191 in words is "one trillion, two hundred billion, one hundred million, one hundred one thousand, one hundred ninety-one".