221152003 has 4 divisors (see below), whose sum is σ = 222274800. Its totient is φ = 220029208.

The previous prime is 221151977. The next prime is 221152013. The reversal of 221152003 is 300251122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221152003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221152013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 561103 + ... + 561496.

It is an arithmetic number, because the mean of its divisors is an integer number (55568700).

Almost surely, 2^221152003 is an apocalyptic number.

221152003 is a deficient number, since it is larger than the sum of its proper divisors (1122797).

221152003 is a wasteful number, since it uses less digits than its factorization.

221152003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1122796.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 221152003 is about 14871.1802826810. The cubic root of 221152003 is about 604.7329404383.

The spelling of 221152003 in words is "two hundred twenty-one million, one hundred fifty-two thousand, three".