110399619220991 has 4 divisors (see below), whose sum is σ = 116210125495800. Its totient is φ = 104589112946184.

The previous prime is 110399619220973. The next prime is 110399619221011. The reversal of 110399619220991 is 199022916993011.

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 110399619220991 - 2²⁶ = 110399552112127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110399619220931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2905253137376 + ... + 2905253137413.

It is an arithmetic number, because the mean of its divisors is an integer number (29052531373950).

Almost surely, 2^{110399619220991} is an apocalyptic number.

110399619220991 is a deficient number, since it is larger than the sum of its proper divisors (5810506274809).

110399619220991 is an equidigital number, since it uses as much as digits as its factorization.

110399619220991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5810506274808.

The product of its (nonzero) digits is 4251528, while the sum is 62.

The spelling of 110399619220991 in words is "one hundred ten trillion, three hundred ninety-nine billion, six hundred nineteen million, two hundred twenty thousand, nine hundred ninety-one".