22022112221111 has 4 divisors (see below), whose sum is σ = 22534254365832. Its totient is φ = 21509970076392.

The previous prime is 22022112221071. The next prime is 22022112221129. The reversal of 22022112221111 is 11112221122022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22022112221111 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 (22022112221611) 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, 256071072296 + ... + 256071072381.

It is an arithmetic number, because the mean of its divisors is an integer number (5633563591458).

Almost surely, 2^{22022112221111} is an apocalyptic number.

22022112221111 is a deficient number, since it is larger than the sum of its proper divisors (512142144721).

22022112221111 is an equidigital number, since it uses as much as digits as its factorization.

22022112221111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512142144720.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 22022112221111 its reverse (11112221122022), we get a palindrome (33134333343133).

The spelling of 22022112221111 in words is "twenty-two trillion, twenty-two billion, one hundred twelve million, two hundred twenty-one thousand, one hundred eleven".