22120012012 has 24 divisors (see below), whose sum is σ = 45268864256. Its totient is φ = 9259539408.

The previous prime is 22120011997. The next prime is 22120012051. The reversal of 22120012012 is 21021002122.

It is a happy number.

It is a super-2 number, since 2×22120012012² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22120011983 and 22120012001.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 9184848 + ... + 9187255.

Almost surely, 2^22120012012 is an apocalyptic number.

It is an amenable number.

22120012012 is an abundant number, since it is smaller than the sum of its proper divisors (23148852244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22120012012 is a wasteful number, since it uses less digits than its factorization.

22120012012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18372157 (or 18372155 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 22120012012 its reverse (21021002122), we get a palindrome (43141014134).

The spelling of 22120012012 in words is "twenty-two billion, one hundred twenty million, twelve thousand, twelve".