20424002420220 has 192 divisors, whose sum is σ = 65738853089280. Its totient is φ = 4641067922688.

The previous prime is 20424002420191. The next prime is 20424002420231. The reversal of 20424002420220 is 2202420042402.

It is a super-3 number, since 3×20424002420220³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 310234947 + ... + 310300773.

It is an arithmetic number, because the mean of its divisors is an integer number (342389859840).

Almost surely, 2^{20424002420220} is an apocalyptic number.

20424002420220 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 20424002420220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32869426544640).

20424002420220 is an abundant number, since it is smaller than the sum of its proper divisors (45314850669060).

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

20424002420220 is a wasteful number, since it uses less digits than its factorization.

20424002420220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70152 (or 70150 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 24.

Adding to 20424002420220 its reverse (2202420042402), we get a palindrome (22626422462622).

The spelling of 20424002420220 in words is "twenty trillion, four hundred twenty-four billion, two million, four hundred twenty thousand, two hundred twenty".