221423195 has 8 divisors (see below), whose sum is σ = 303666144. Its totient is φ = 151833024.

The previous prime is 221423171. The next prime is 221423197. The reversal of 221423195 is 591324122.

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

It is not a de Polignac number, because 221423195 - 2⁸ = 221422939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221423197) 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, 3163154 + ... + 3163223.

It is an arithmetic number, because the mean of its divisors is an integer number (37958268).

Almost surely, 2^221423195 is an apocalyptic number.

221423195 is a deficient number, since it is larger than the sum of its proper divisors (82242949).

221423195 is an equidigital number, since it uses as much as digits as its factorization.

221423195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6326389.

The product of its digits is 4320, while the sum is 29.

The square root of 221423195 is about 14880.2955279793. The cubic root of 221423195 is about 604.9800280273.

The spelling of 221423195 in words is "two hundred twenty-one million, four hundred twenty-three thousand, one hundred ninety-five".