221000122103 has 6 divisors (see below), whose sum is σ = 231026593224. Its totient is φ = 211391420636.

The previous prime is 221000122097. The next prime is 221000122117. The reversal of 221000122103 is 301221000122.

It is a happy number.

It is not a de Polignac number, because 221000122103 - 2¹² = 221000118007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221000122153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 208884275 + ... + 208885332.

It is an arithmetic number, because the mean of its divisors is an integer number (38504432204).

Almost surely, 2^221000122103 is an apocalyptic number.

221000122103 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

221000122103 is a deficient number, since it is larger than the sum of its proper divisors (10026471121).

221000122103 is an equidigital number, since it uses as much as digits as its factorization.

221000122103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417769653 (or 417769630 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 221000122103 its reverse (301221000122), we get a palindrome (522221122225).

The spelling of 221000122103 in words is "two hundred twenty-one billion, one hundred twenty-two thousand, one hundred three".