220100103 has 12 divisors (see below), whose sum is σ = 320840520. Its totient is φ = 145386576.

The previous prime is 220100099. The next prime is 220100117. The reversal of 220100103 is 301001022.

It is a happy number.

It is not a de Polignac number, because 220100103 - 2² = 220100099 is a prime.

It is a super-2 number, since 2×220100103² = 96888110681221218, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220100303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 111201 + ... + 113162.

It is an arithmetic number, because the mean of its divisors is an integer number (26736710).

Almost surely, 2^220100103 is an apocalyptic number.

220100103 is a deficient number, since it is larger than the sum of its proper divisors (100740417).

220100103 is a wasteful number, since it uses less digits than its factorization.

220100103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224478 (or 224475 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 220100103 is about 14835.7710618626. The cubic root of 220100103 is about 603.7726208363.

Adding to 220100103 its reverse (301001022), we get a palindrome (521101125).

The spelling of 220100103 in words is "two hundred twenty million, one hundred thousand, one hundred three".