91112001121023 has 4 divisors (see below), whose sum is σ = 121482668161368. Its totient is φ = 60741334080680.

The previous prime is 91112001120953. The next prime is 91112001121061. The reversal of 91112001121023 is 32012110021119.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 91112001121023 - 2¹⁶ = 91112001055487 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91112001120984 and 91112001121002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91112001121423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15185333520168 + ... + 15185333520173.

It is an arithmetic number, because the mean of its divisors is an integer number (30370667040342).

Almost surely, 2^{91112001121023} is an apocalyptic number.

91112001121023 is a deficient number, since it is larger than the sum of its proper divisors (30370667040345).

91112001121023 is a wasteful number, since it uses less digits than its factorization.

91112001121023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30370667040344.

The product of its (nonzero) digits is 216, while the sum is 24.

The spelling of 91112001121023 in words is "ninety-one trillion, one hundred twelve billion, one million, one hundred twenty-one thousand, twenty-three".