22112420 has 24 divisors (see below), whose sum is σ = 50658048. Its totient is φ = 8040800.

The previous prime is 22112401. The next prime is 22112429. The reversal of 22112420 is 2421122.

It is a junction number, because it is equal to n+sod(n) for n = 22112395 and 22112404.

It is not an unprimeable number, because it can be changed into a prime (22112429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50036 + ... + 50475.

It is an arithmetic number, because the mean of its divisors is an integer number (2110752).

Almost surely, 2^22112420 is an apocalyptic number.

22112420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22112420 is an abundant number, since it is smaller than the sum of its proper divisors (28545628).

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

22112420 is a wasteful number, since it uses less digits than its factorization.

22112420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100531 (or 100529 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 22112420 is about 4702.3845015056. The cubic root of 22112420 is about 280.6804030968.

Adding to 22112420 its reverse (2421122), we get a palindrome (24533542).

The spelling of 22112420 in words is "twenty-two million, one hundred twelve thousand, four hundred twenty".