10000111222091 has 4 divisors (see below), whose sum is σ = 10000144302312. Its totient is φ = 10000078141872.

The previous prime is 10000111222043. The next prime is 10000111222093. The reversal of 10000111222091 is 19022211100001.

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 10000111222091 - 2²² = 10000107027787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10000111222093) 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, 16082441 + ... + 16692666.

It is an arithmetic number, because the mean of its divisors is an integer number (2500036075578).

Almost surely, 2^{10000111222091} is an apocalyptic number.

10000111222091 is a deficient number, since it is larger than the sum of its proper divisors (33080221).

10000111222091 is an equidigital number, since it uses as much as digits as its factorization.

10000111222091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33080220.

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 10000111222091 its reverse (19022211100001), we get a palindrome (29022322322092).

The spelling of 10000111222091 in words is "ten trillion, one hundred eleven million, two hundred twenty-two thousand, ninety-one".