1110121212191 has 2 divisors, whose sum is σ = 1110121212192. Its totient is φ = 1110121212190.

The previous prime is 1110121212181. The next prime is 1110121212223. The reversal of 1110121212191 is 1912121210111.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1110121212191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1110121212121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555060606095 + 555060606096.

It is an arithmetic number, because the mean of its divisors is an integer number (555060606096).

Almost surely, 2^{1110121212191} is an apocalyptic number.

1110121212191 is a deficient number, since it is larger than the sum of its proper divisors (1).

1110121212191 is an equidigital number, since it uses as much as digits as its factorization.

1110121212191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 23.

The spelling of 1110121212191 in words is "one trillion, one hundred ten billion, one hundred twenty-one million, two hundred twelve thousand, one hundred ninety-one".