221314308 has 12 divisors (see below), whose sum is σ = 516400080. Its totient is φ = 73771432.

The previous prime is 221314307. The next prime is 221314367. The reversal of 221314308 is 803413122.

221314308 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (221314307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9221418 + ... + 9221441.

It is an arithmetic number, because the mean of its divisors is an integer number (43033340).

Almost surely, 2^221314308 is an apocalyptic number.

It is an amenable number.

221314308 is an abundant number, since it is smaller than the sum of its proper divisors (295085772).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221314308 is a wasteful number, since it uses less digits than its factorization.

221314308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18442866 (or 18442864 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 221314308 is about 14876.6363133606. The cubic root of 221314308 is about 604.8808435051.

The spelling of 221314308 in words is "two hundred twenty-one million, three hundred fourteen thousand, three hundred eight".