216200221500 has 96 divisors (see below), whose sum is σ = 629771688000. Its totient is φ = 57635385600.

The previous prime is 216200221487. The next prime is 216200221541. The reversal of 216200221500 is 5122002612.

It is a happy number.

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, 5182726 + ... + 5224274.

It is an arithmetic number, because the mean of its divisors is an integer number (6560121750).

Almost surely, 2^216200221500 is an apocalyptic number.

216200221500 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 216200221500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (314885844000).

216200221500 is an abundant number, since it is smaller than the sum of its proper divisors (413571466500).

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

216200221500 is a wasteful number, since it uses less digits than its factorization.

216200221500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45040 (or 45028 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The spelling of 216200221500 in words is "two hundred sixteen billion, two hundred million, two hundred twenty-one thousand, five hundred".