22112312011 has 4 divisors (see below), whose sum is σ = 22286424832. Its totient is φ = 21938199192.

The previous prime is 22112311999. The next prime is 22112312017. The reversal of 22112312011 is 11021321122.

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 22112312011 - 2⁵ = 22112311979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22112312017) 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, 87056220 + ... + 87056473.

It is an arithmetic number, because the mean of its divisors is an integer number (5571606208).

Almost surely, 2^22112312011 is an apocalyptic number.

22112312011 is a deficient number, since it is larger than the sum of its proper divisors (174112821).

22112312011 is a wasteful number, since it uses less digits than its factorization.

22112312011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174112820.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 22112312011 its reverse (11021321122), we get a palindrome (33133633133).

The spelling of 22112312011 in words is "twenty-two billion, one hundred twelve million, three hundred twelve thousand, eleven".