20112440120 has 128 divisors (see below), whose sum is σ = 48991521600. Its totient is φ = 7405977600.

The previous prime is 20112440039. The next prime is 20112440147. The reversal of 20112440120 is 2104421102.

It is a super-2 number, since 2×20112440120² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8754812 + ... + 8757108.

Almost surely, 2^20112440120 is an apocalyptic number.

20112440120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20112440120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24495760800).

20112440120 is an abundant number, since it is smaller than the sum of its proper divisors (28879081480).

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

20112440120 is a wasteful number, since it uses less digits than its factorization.

20112440120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2649 (or 2645 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20112440120 its reverse (2104421102), we get a palindrome (22216861222).

The spelling of 20112440120 in words is "twenty billion, one hundred twelve million, four hundred forty thousand, one hundred twenty".