221196669 has 8 divisors (see below), whose sum is σ = 295014720. Its totient is φ = 147421536.

The previous prime is 221196667. The next prime is 221196697. The reversal of 221196669 is 966691122.

It is a happy number.

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

It is not a de Polignac number, because 221196669 - 2¹ = 221196667 is a prime.

It is a super-2 number, since 2×221196669² = 97855932753391122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 221196669.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221196667) 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 7 ways as a sum of consecutive naturals, for example, 4312 + ... + 21470.

It is an arithmetic number, because the mean of its divisors is an integer number (36876840).

Almost surely, 2^221196669 is an apocalyptic number.

It is an amenable number.

221196669 is a deficient number, since it is larger than the sum of its proper divisors (73818051).

221196669 is a wasteful number, since it uses less digits than its factorization.

221196669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21459.

The product of its digits is 69984, while the sum is 42.

The square root of 221196669 is about 14872.6819706467. The cubic root of 221196669 is about 604.7736502712.

The spelling of 221196669 in words is "two hundred twenty-one million, one hundred ninety-six thousand, six hundred sixty-nine".