111220310091 has 8 divisors (see below), whose sum is σ = 161774996544. Its totient is φ = 67406248520.

The previous prime is 111220310063. The next prime is 111220310093. The reversal of 111220310091 is 190013022111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111220310091 - 2¹⁸ = 111220047947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111220310093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1685156181 + ... + 1685156246.

It is an arithmetic number, because the mean of its divisors is an integer number (20221874568).

Almost surely, 2^111220310091 is an apocalyptic number.

111220310091 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111220310091 is a deficient number, since it is larger than the sum of its proper divisors (50554686453).

111220310091 is a wasteful number, since it uses less digits than its factorization.

111220310091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3370312441.

The product of its (nonzero) digits is 108, while the sum is 21.

The spelling of 111220310091 in words is "one hundred eleven billion, two hundred twenty million, three hundred ten thousand, ninety-one".