221013003 has 16 divisors (see below), whose sum is σ = 308457216. Its totient is φ = 140495520.

The previous prime is 221012999. The next prime is 221013011. The reversal of 221013003 is 300310122.

It is a happy number.

It is not a de Polignac number, because 221013003 - 2² = 221012999 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221013003.

It is not an unprimeable number, because it can be changed into a prime (221013053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18001 + ... + 27677.

It is an arithmetic number, because the mean of its divisors is an integer number (19278576).

Almost surely, 2^221013003 is an apocalyptic number.

221013003 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

221013003 is a deficient number, since it is larger than the sum of its proper divisors (87444213).

221013003 is a wasteful number, since it uses less digits than its factorization.

221013003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10034.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 221013003 is about 14866.5060791028. The cubic root of 221013003 is about 604.6062168958.

Adding to 221013003 its reverse (300310122), we get a palindrome (521323125).

The spelling of 221013003 in words is "two hundred twenty-one million, thirteen thousand, three".