22012002112 has 28 divisors (see below), whose sum is σ = 44860613860. Its totient is φ = 10708540416.

The previous prime is 22012002109. The next prime is 22012002119. The reversal of 22012002112 is 21120021022.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19425669376 + 2586332736 = 139376^2 + 50856^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22012002092 and 22012002101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22012002119) 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, 4645437 + ... + 4650172.

Almost surely, 2^22012002112 is an apocalyptic number.

It is an amenable number.

22012002112 is an abundant number, since it is smaller than the sum of its proper divisors (22848611748).

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

22012002112 is an equidigital number, since it uses as much as digits as its factorization.

22012002112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9295658 (or 9295648 counting only the distinct ones).

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

Adding to 22012002112 its reverse (21120021022), we get a palindrome (43132023134).

The spelling of 22012002112 in words is "twenty-two billion, twelve million, two thousand, one hundred twelve".