216242420000 has 240 divisors, whose sum is σ = 562567420800. Its totient is φ = 81567360000.

The previous prime is 216242419999. The next prime is 216242420021. The reversal of 216242420000 is 24242612.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 90818810 + ... + 90821190.

It is an arithmetic number, because the mean of its divisors is an integer number (2344030920).

Almost surely, 2^216242420000 is an apocalyptic number.

216242420000 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 216242420000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281283710400).

216242420000 is an abundant number, since it is smaller than the sum of its proper divisors (346325000800).

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

216242420000 is a wasteful number, since it uses less digits than its factorization.

216242420000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2669 (or 2646 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 216242420000 its reverse (24242612), we get a palindrome (216266662612).

The spelling of 216242420000 in words is "two hundred sixteen billion, two hundred forty-two million, four hundred twenty thousand".