221055052 has 24 divisors (see below), whose sum is σ = 403880400. Its totient is φ = 105731136.

The previous prime is 221055049. The next prime is 221055077. The reversal of 221055052 is 250550122.

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 7 ways as a sum of consecutive naturals, for example, 3903 + ... + 21385.

It is an arithmetic number, because the mean of its divisors is an integer number (16828350).

Almost surely, 2^221055052 is an apocalyptic number.

It is an amenable number.

221055052 is a deficient number, since it is larger than the sum of its proper divisors (182825348).

221055052 is a wasteful number, since it uses less digits than its factorization.

221055052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17625 (or 17623 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 221055052 is about 14867.9202311554. The cubic root of 221055052 is about 604.6445577390.

The spelling of 221055052 in words is "two hundred twenty-one million, fifty-five thousand, fifty-two".