221169238 has 8 divisors (see below), whose sum is σ = 334175832. Its totient is φ = 109777296.

The previous prime is 221169227. The next prime is 221169241. The reversal of 221169238 is 832961122.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 403320 + ... + 403867.

It is an arithmetic number, because the mean of its divisors is an integer number (41771979).

Almost surely, 2^221169238 is an apocalyptic number.

221169238 is a deficient number, since it is larger than the sum of its proper divisors (113006594).

221169238 is a wasteful number, since it uses less digits than its factorization.

221169238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 807326.

The product of its digits is 10368, while the sum is 34.

The square root of 221169238 is about 14871.7597479249. The cubic root of 221169238 is about 604.7486495454.

The spelling of 221169238 in words is "two hundred twenty-one million, one hundred sixty-nine thousand, two hundred thirty-eight".