22001120 has 24 divisors (see below), whose sum is σ = 51978024. Its totient is φ = 8800384.

The previous prime is 22001113. The next prime is 22001129. The reversal of 22001120 is 2110022.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a junction number, because it is equal to n+sod(n) for n = 22001098 and 22001107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22001129) 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, 68594 + ... + 68913.

It is an arithmetic number, because the mean of its divisors is an integer number (2165751).

Almost surely, 2^22001120 is an apocalyptic number.

22001120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22001120 is an abundant number, since it is smaller than the sum of its proper divisors (29976904).

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

22001120 is a wasteful number, since it uses less digits than its factorization.

22001120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137522 (or 137514 counting only the distinct ones).

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

The square root of 22001120 is about 4690.5351507051. The cubic root of 22001120 is about 280.2086879607.

Adding to 22001120 its reverse (2110022), we get a palindrome (24111142).

The spelling of 22001120 in words is "twenty-two million, one thousand, one hundred twenty".