221196929 has 8 divisors (see below), whose sum is σ = 223746432. Its totient is φ = 218655360.

The previous prime is 221196901. The next prime is 221196947. The reversal of 221196929 is 929691122.

It is a happy number.

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 221196929 - 2¹² = 221192833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221196029) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 67724 + ... + 70914.

It is an arithmetic number, because the mean of its divisors is an integer number (27968304).

Almost surely, 2^221196929 is an apocalyptic number.

It is an amenable number.

221196929 is a deficient number, since it is larger than the sum of its proper divisors (2549503).

221196929 is a wasteful number, since it uses less digits than its factorization.

221196929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3967.

The product of its digits is 34992, while the sum is 41.

The square root of 221196929 is about 14872.6907115021. The cubic root of 221196929 is about 604.7738872264.

The spelling of 221196929 in words is "two hundred twenty-one million, one hundred ninety-six thousand, nine hundred twenty-nine".