22123222011 has 32 divisors (see below), whose sum is σ = 35802051840. Its totient is φ = 13390257600.

The previous prime is 22123222007. The next prime is 22123222019. The reversal of 22123222011 is 11022232122.

It is not a de Polignac number, because 22123222011 - 2² = 22123222007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22123222019) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 177076 + ... + 274958.

It is an arithmetic number, because the mean of its divisors is an integer number (1118814120).

Almost surely, 2^22123222011 is an apocalyptic number.

22123222011 is a deficient number, since it is larger than the sum of its proper divisors (13678829829).

22123222011 is a wasteful number, since it uses less digits than its factorization.

22123222011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98664 (or 98658 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 22123222011 its reverse (11022232122), we get a palindrome (33145454133).

It can be divided in two parts, 2212 and 3222011, that added together give a palindrome (3224223).

The spelling of 22123222011 in words is "twenty-two billion, one hundred twenty-three million, two hundred twenty-two thousand, eleven".