221152005 has 32 divisors (see below), whose sum is σ = 394571520. Its totient is φ = 117524160.

The previous prime is 221151977. The next prime is 221152013. The reversal of 221152005 is 500251122.

It is not a de Polignac number, because 221152005 - 2⁹ = 221151493 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36760 + ... + 42350.

It is an arithmetic number, because the mean of its divisors is an integer number (12330360).

Almost surely, 2^221152005 is an apocalyptic number.

It is an amenable number.

221152005 is a deficient number, since it is larger than the sum of its proper divisors (173419515).

221152005 is a wasteful number, since it uses less digits than its factorization.

221152005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5898 (or 5892 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 221152005 is about 14871.1803499252. The cubic root of 221152005 is about 604.7329422613.

The spelling of 221152005 in words is "two hundred twenty-one million, one hundred fifty-two thousand, five".