22401440120 has 64 divisors (see below), whose sum is σ = 50821585920. Its totient is φ = 8886455424.

The previous prime is 22401440077. The next prime is 22401440143. The reversal of 22401440120 is 2104410422.

It is a super-2 number, since 2×22401440120² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 22401440092 and 22401440101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3089219 + ... + 3096461.

It is an arithmetic number, because the mean of its divisors is an integer number (794087280).

Almost surely, 2^22401440120 is an apocalyptic number.

22401440120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22401440120 is an abundant number, since it is smaller than the sum of its proper divisors (28420145800).

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

22401440120 is a wasteful number, since it uses less digits than its factorization.

22401440120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7884 (or 7880 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 22401440120 its reverse (2104410422), we get a palindrome (24505850542).

The spelling of 22401440120 in words is "twenty-two billion, four hundred one million, four hundred forty thousand, one hundred twenty".