22100111212111 has 4 divisors (see below), whose sum is σ = 22327947410272. Its totient is φ = 21872275013952.

The previous prime is 22100111212097. The next prime is 22100111212189. The reversal of 22100111212111 is 11121211100122.

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 22100111212111 - 2¹⁵ = 22100111179343 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 (22100111212411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113918098935 + ... + 113918099128.

It is an arithmetic number, because the mean of its divisors is an integer number (5581986852568).

Almost surely, 2^{22100111212111} is an apocalyptic number.

22100111212111 is a deficient number, since it is larger than the sum of its proper divisors (227836198161).

22100111212111 is an equidigital number, since it uses as much as digits as its factorization.

22100111212111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227836198160.

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 22100111212111 its reverse (11121211100122), we get a palindrome (33221322312233).

The spelling of 22100111212111 in words is "twenty-two trillion, one hundred billion, one hundred eleven million, two hundred twelve thousand, one hundred eleven".