111212000102091 has 32 divisors (see below), whose sum is σ = 177396385775616. Its totient is φ = 60633530244000.

The previous prime is 111212000102059. The next prime is 111212000102101. The reversal of 111212000102091 is 190201000212111.

111212000102091 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 111212000102091 - 2⁵ = 111212000102059 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (111212000102011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1203000015 + ... + 1203092456.

It is an arithmetic number, because the mean of its divisors is an integer number (5543637055488).

Almost surely, 2^{111212000102091} is an apocalyptic number.

111212000102091 is a deficient number, since it is larger than the sum of its proper divisors (66184385673525).

111212000102091 is a wasteful number, since it uses less digits than its factorization.

111212000102091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2406092583.

The product of its (nonzero) digits is 72, while the sum is 21.

The spelling of 111212000102091 in words is "one hundred eleven trillion, two hundred twelve billion, one hundred two thousand, ninety-one".