221960899 has 8 divisors (see below), whose sum is σ = 230773760. Its totient is φ = 213251400.

The previous prime is 221960887. The next prime is 221960911. The reversal of 221960899 is 998069122.

It is an interprime number because it is at equal distance from previous prime (221960887) and next prime (221960911).

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 221960899 - 2⁷ = 221960771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225960899) 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, 21447 + ... + 30064.

It is an arithmetic number, because the mean of its divisors is an integer number (28846720).

Almost surely, 2^221960899 is an apocalyptic number.

221960899 is a deficient number, since it is larger than the sum of its proper divisors (8812861).

221960899 is a wasteful number, since it uses less digits than its factorization.

221960899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51681.

The product of its (nonzero) digits is 139968, while the sum is 46.

The square root of 221960899 is about 14898.3522243233. The cubic root of 221960899 is about 605.4693432441.

The spelling of 221960899 in words is "two hundred twenty-one million, nine hundred sixty thousand, eight hundred ninety-nine".