221429195 has 16 divisors (see below), whose sum is σ = 286705440. Its totient is φ = 163202304.

The previous prime is 221429147. The next prime is 221429203. The reversal of 221429195 is 591924122.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221429195 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 33992 + ... + 39978.

It is an arithmetic number, because the mean of its divisors is an integer number (17919090).

Almost surely, 2^221429195 is an apocalyptic number.

221429195 is a deficient number, since it is larger than the sum of its proper divisors (65276245).

221429195 is a wasteful number, since it uses less digits than its factorization.

221429195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6574.

The product of its digits is 12960, while the sum is 35.

The square root of 221429195 is about 14880.4971355126. The cubic root of 221429195 is about 604.9854924463.

The spelling of 221429195 in words is "two hundred twenty-one million, four hundred twenty-nine thousand, one hundred ninety-five".