200120220991 has 8 divisors (see below), whose sum is σ = 202287897360. Its totient is φ = 197959504512.

The previous prime is 200120220947. The next prime is 200120221061. The reversal of 200120220991 is 199022021002.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200120220991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200120220941) 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, 1682145 + ... + 1797178.

It is an arithmetic number, because the mean of its divisors is an integer number (25285987170).

Almost surely, 2^200120220991 is an apocalyptic number.

200120220991 is a deficient number, since it is larger than the sum of its proper divisors (2167676369).

200120220991 is a wasteful number, since it uses less digits than its factorization.

200120220991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3479945.

The product of its (nonzero) digits is 1296, while the sum is 28.

Adding to 200120220991 its reverse (199022021002), we get a palindrome (399142241993).

The spelling of 200120220991 in words is "two hundred billion, one hundred twenty million, two hundred twenty thousand, nine hundred ninety-one".