22110012 has 18 divisors (see below), whose sum is σ = 55889288. Its totient is φ = 7369992.

The previous prime is 22110001. The next prime is 22110017. The reversal of 22110012 is 21001122.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 22109976 and 22110003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22110017) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 307048 + ... + 307119.

Almost surely, 2^22110012 is an apocalyptic number.

It is an amenable number.

22110012 is an abundant number, since it is smaller than the sum of its proper divisors (33779276).

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

22110012 is a wasteful number, since it uses less digits than its factorization.

22110012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614177 (or 614172 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 22110012 is about 4702.1284542216. The cubic root of 22110012 is about 280.6702142083.

Adding to 22110012 its reverse (21001122), we get a palindrome (43111134).

The spelling of 22110012 in words is "twenty-two million, one hundred ten thousand, twelve".