22211122012 has 48 divisors (see below), whose sum is σ = 39452799232. Its totient is φ = 10940728320.

The previous prime is 22211122007. The next prime is 22211122019. The reversal of 22211122012 is 21022111222.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22211122019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59547058 + ... + 59547430.

Almost surely, 2^22211122012 is an apocalyptic number.

It is an amenable number.

22211122012 is a deficient number, since it is larger than the sum of its proper divisors (17241677220).

22211122012 is a wasteful number, since it uses less digits than its factorization.

22211122012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1118 (or 1116 counting only the distinct ones).

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

Adding to 22211122012 its reverse (21022111222), we get a palindrome (43233233234).

The spelling of 22211122012 in words is "twenty-two billion, two hundred eleven million, one hundred twenty-two thousand, twelve".