221252514 has 32 divisors (see below), whose sum is σ = 506203776. Its totient is φ = 63154560.

The previous prime is 221252509. The next prime is 221252533. The reversal of 221252514 is 415252122.

221252514 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60424 + ... + 63980.

It is an arithmetic number, because the mean of its divisors is an integer number (15818868).

Almost surely, 2^221252514 is an apocalyptic number.

221252514 is an abundant number, since it is smaller than the sum of its proper divisors (284951262).

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

221252514 is a wasteful number, since it uses less digits than its factorization.

221252514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5050.

The product of its digits is 1600, while the sum is 24.

The square root of 221252514 is about 14874.5592875890. The cubic root of 221252514 is about 604.8245412465.

The spelling of 221252514 in words is "two hundred twenty-one million, two hundred fifty-two thousand, five hundred fourteen".