221002103 has 16 divisors (see below), whose sum is σ = 262612800. Its totient is φ = 185840928.

The previous prime is 221002097. The next prime is 221002121. The reversal of 221002103 is 301200122.

It is a happy number.

It is not a de Polignac number, because 221002103 - 2⁴ = 221002087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221002153) 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, 12101 + ... + 24257.

It is an arithmetic number, because the mean of its divisors is an integer number (16413300).

Almost surely, 2^221002103 is an apocalyptic number.

221002103 is a deficient number, since it is larger than the sum of its proper divisors (41610697).

221002103 is an equidigital number, since it uses as much as digits as its factorization.

221002103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12231 (or 12217 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 221002103 is about 14866.1394786945. The cubic root of 221002103 is about 604.5962773356.

Adding to 221002103 its reverse (301200122), we get a palindrome (522202225).

The spelling of 221002103 in words is "two hundred twenty-one million, two thousand, one hundred three".