91222220000111 has 4 divisors (see below), whose sum is σ = 96588232941312. Its totient is φ = 85856207058912.

The previous prime is 91222220000089. The next prime is 91222220000113. The reversal of 91222220000111 is 11100002222219.

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 91222220000111 - 2⁶ = 91222220000047 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 (91222220000113) 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, 2683006470575 + ... + 2683006470608.

It is an arithmetic number, because the mean of its divisors is an integer number (24147058235328).

Almost surely, 2^{91222220000111} is an apocalyptic number.

91222220000111 is a deficient number, since it is larger than the sum of its proper divisors (5366012941201).

91222220000111 is a wasteful number, since it uses less digits than its factorization.

91222220000111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5366012941200.

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 91222220000111 in words is "ninety-one trillion, two hundred twenty-two billion, two hundred twenty million, one hundred eleven", and thus it is an aban number.