220191099217 has 8 divisors (see below), whose sum is σ = 233847883872. Its totient is φ = 206612577600.

The previous prime is 220191099209. The next prime is 220191099343. The reversal of 220191099217 is 712990191022.

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

It is a cyclic number.

It is not a de Polignac number, because 220191099217 - 2³ = 220191099209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220191099017) 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, 19559959 + ... + 19571212.

It is an arithmetic number, because the mean of its divisors is an integer number (29230985484).

Almost surely, 2^220191099217 is an apocalyptic number.

It is an amenable number.

220191099217 is a deficient number, since it is larger than the sum of its proper divisors (13656784655).

220191099217 is a wasteful number, since it uses less digits than its factorization.

220191099217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39131519.

The product of its (nonzero) digits is 40824, while the sum is 43.

The spelling of 220191099217 in words is "two hundred twenty billion, one hundred ninety-one million, ninety-nine thousand, two hundred seventeen".