221979063 has 8 divisors (see below), whose sum is σ = 300988800. Its totient is φ = 145477688.

The previous prime is 221979053. The next prime is 221979119. The reversal of 221979063 is 360979122.

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 221979063 - 2⁵ = 221979031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221979053) 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, 626883 + ... + 627236.

It is an arithmetic number, because the mean of its divisors is an integer number (37623600).

Almost surely, 2^221979063 is an apocalyptic number.

221979063 is a deficient number, since it is larger than the sum of its proper divisors (79009737).

221979063 is a wasteful number, since it uses less digits than its factorization.

221979063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1254181.

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 221979063 is about 14898.9618094685. The cubic root of 221979063 is about 605.4858588335.

The spelling of 221979063 in words is "two hundred twenty-one million, nine hundred seventy-nine thousand, sixty-three".