13221220103 has 16 divisors (see below), whose sum is σ = 16669160256. Its totient is φ = 10205602560.

The previous prime is 13221220043. The next prime is 13221220109. The reversal of 13221220103 is 30102212231.

It is a cyclic number.

It is not a de Polignac number, because 13221220103 - 2³⁰ = 12147478279 is a prime.

It is a super-2 number, since 2×13221220103² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13221220109) 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, 1768076 + ... + 1775537.

It is an arithmetic number, because the mean of its divisors is an integer number (1041822516).

Almost surely, 2^13221220103 is an apocalyptic number.

13221220103 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13221220103 is a deficient number, since it is larger than the sum of its proper divisors (3447940153).

13221220103 is a wasteful number, since it uses less digits than its factorization.

13221220103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3543674.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 13221220103 its reverse (30102212231), we get a palindrome (43323432334).

The spelling of 13221220103 in words is "thirteen billion, two hundred twenty-one million, two hundred twenty thousand, one hundred three".