20112240022420 has 192 divisors, whose sum is σ = 53433135576576. Its totient is φ = 6187847178240.

The previous prime is 20112240022409. The next prime is 20112240022423. The reversal of 20112240022420 is 2422004221102.

It is a junction number, because it is equal to n+sod(n) for n = 20112240022391 and 20112240022400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112240022423) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 78727614 + ... + 78982666.

It is an arithmetic number, because the mean of its divisors is an integer number (278297581128).

Almost surely, 2^{20112240022420} is an apocalyptic number.

20112240022420 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 20112240022420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26716567788288).

20112240022420 is an abundant number, since it is smaller than the sum of its proper divisors (33320895554156).

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

20112240022420 is a wasteful number, since it uses less digits than its factorization.

20112240022420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256290 (or 256288 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 20112240022420 its reverse (2422004221102), we get a palindrome (22534244243522).

The spelling of 20112240022420 in words is "twenty trillion, one hundred twelve billion, two hundred forty million, twenty-two thousand, four hundred twenty".