22111001220111 has 4 divisors (see below), whose sum is σ = 29481334960152. Its totient is φ = 14740667480072.

The previous prime is 22111001220079. The next prime is 22111001220239. The reversal of 22111001220111 is 11102210011122.

It is a happy number.

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 22111001220111 - 2⁵ = 22111001220079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22111001227111) 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, 3685166870016 + ... + 3685166870021.

It is an arithmetic number, because the mean of its divisors is an integer number (7370333740038).

Almost surely, 2^{22111001220111} is an apocalyptic number.

22111001220111 is a deficient number, since it is larger than the sum of its proper divisors (7370333740041).

22111001220111 is an equidigital number, since it uses as much as digits as its factorization.

22111001220111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7370333740040.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 22111001220111 its reverse (11102210011122), we get a palindrome (33213211231233).

The spelling of 22111001220111 in words is "twenty-two trillion, one hundred eleven billion, one million, two hundred twenty thousand, one hundred eleven".