221149075 has 48 divisors (see below), whose sum is σ = 332478720. Its totient is φ = 142542720.

The previous prime is 221149067. The next prime is 221149127. The reversal of 221149075 is 570941122.

It is not a de Polignac number, because 221149075 - 2³ = 221149067 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 754629 + ... + 754921.

It is an arithmetic number, because the mean of its divisors is an integer number (6926640).

Almost surely, 2^221149075 is an apocalyptic number.

221149075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

221149075 is a deficient number, since it is larger than the sum of its proper divisors (111329645).

221149075 is a wasteful number, since it uses less digits than its factorization.

221149075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556 (or 551 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 221149075 is about 14871.0818369075. The cubic root of 221149075 is about 604.7302715863.

The spelling of 221149075 in words is "two hundred twenty-one million, one hundred forty-nine thousand, seventy-five".