221216191158 has 8 divisors (see below), whose sum is σ = 442432382328. Its totient is φ = 73738730384.

The previous prime is 221216191093. The next prime is 221216191181. The reversal of 221216191158 is 851191612122.

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

221216191158 is an admirable number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 18434682591 + ... + 18434682602.

It is an arithmetic number, because the mean of its divisors is an integer number (55304047791).

Almost surely, 2^221216191158 is an apocalyptic number.

221216191158 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221216191158 is a wasteful number, since it uses less digits than its factorization.

221216191158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36869365198.

The product of its digits is 17280, while the sum is 39.

The spelling of 221216191158 in words is "two hundred twenty-one billion, two hundred sixteen million, one hundred ninety-one thousand, one hundred fifty-eight".