9800221995 has 20 divisors (see below), whose sum is σ = 17567806080. Its totient is φ = 5226784848.

The previous prime is 9800221973. The next prime is 9800222009. The reversal of 9800221995 is 5991220089.

It is not a de Polignac number, because 9800221995 - 2²⁴ = 9783444779 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 9800221995.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12098635 + ... + 12099444.

It is an arithmetic number, because the mean of its divisors is an integer number (878390304).

Almost surely, 2^9800221995 is an apocalyptic number.

9800221995 is a deficient number, since it is larger than the sum of its proper divisors (7767584085).

9800221995 is a wasteful number, since it uses less digits than its factorization.

9800221995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24198096 (or 24198087 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 45.

The square root of 9800221995 is about 98996.0706038376. The cubic root of 9800221995 is about 2139.9911196388.

The spelling of 9800221995 in words is "nine billion, eight hundred million, two hundred twenty-one thousand, nine hundred ninety-five".