210221200987 has 8 divisors (see below), whose sum is σ = 240488582400. Its totient is φ = 180012764904.

The previous prime is 210221200963. The next prime is 210221201027. The reversal of 210221200987 is 789002122012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 210221200987 - 2¹¹ = 210221198939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210221204987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14728687 + ... + 14742952.

It is an arithmetic number, because the mean of its divisors is an integer number (30061072800).

Almost surely, 2^210221200987 is an apocalyptic number.

210221200987 is a deficient number, since it is larger than the sum of its proper divisors (30267381413).

210221200987 is a wasteful number, since it uses less digits than its factorization.

210221200987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29472665.

The product of its (nonzero) digits is 8064, while the sum is 34.

Adding to 210221200987 its reverse (789002122012), we get a palindrome (999223322999).

The spelling of 210221200987 in words is "two hundred ten billion, two hundred twenty-one million, two hundred thousand, nine hundred eighty-seven".