22222201111 has 32 divisors (see below), whose sum is σ = 25578229248. Its totient is φ = 19109207040.

The previous prime is 22222201103. The next prime is 22222201121. The reversal of 22222201111 is 11110222222.

It is a happy number.

It is not a de Polignac number, because 22222201111 - 2³ = 22222201103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22222201121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24500320 + ... + 24501226.

It is an arithmetic number, because the mean of its divisors is an integer number (799319664).

Almost surely, 2^22222201111 is an apocalyptic number.

22222201111 is a deficient number, since it is larger than the sum of its proper divisors (3356028137).

22222201111 is a wasteful number, since it uses less digits than its factorization.

22222201111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1911.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22222201111 its reverse (11110222222), we get a palindrome (33332423333).

The spelling of 22222201111 in words is "twenty-two billion, two hundred twenty-two million, two hundred one thousand, one hundred eleven".