200220221987 has 16 divisors (see below), whose sum is σ = 207340646400. Its totient is φ = 193191088608.

The previous prime is 200220221983. The next prime is 200220222077. The reversal of 200220221987 is 789122022002.

It is a cyclic number.

It is not a de Polignac number, because 200220221987 - 2² = 200220221983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200220221983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12674708 + ... + 12690494.

It is an arithmetic number, because the mean of its divisors is an integer number (12958790400).

Almost surely, 2^200220221987 is an apocalyptic number.

200220221987 is a deficient number, since it is larger than the sum of its proper divisors (7120424413).

200220221987 is a wasteful number, since it uses less digits than its factorization.

200220221987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18650.

The product of its (nonzero) digits is 16128, while the sum is 35.

Adding to 200220221987 its reverse (789122022002), we get a palindrome (989342243989).

The spelling of 200220221987 in words is "two hundred billion, two hundred twenty million, two hundred twenty-one thousand, nine hundred eighty-seven".