221149952 has 18 divisors (see below), whose sum is σ = 441436548. Its totient is φ = 110574848.

The previous prime is 221149937. The next prime is 221149967. The reversal of 221149952 is 259941122.

It is an interprime number because it is at equal distance from previous prime (221149937) and next prime (221149967).

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 431678 + ... + 432189.

Almost surely, 2^221149952 is an apocalyptic number.

It is an amenable number.

221149952 is a deficient number, since it is larger than the sum of its proper divisors (220286596).

221149952 is an frugal number, since it uses more digits than its factorization.

221149952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863883 (or 863869 counting only the distinct ones).

The product of its digits is 12960, while the sum is 35.

The square root of 221149952 is about 14871.1113236368. Note that the first 3 decimals coincide. The cubic root of 221149952 is about 604.7310709683.

The spelling of 221149952 in words is "two hundred twenty-one million, one hundred forty-nine thousand, nine hundred fifty-two".