12103130221 has 32 divisors (see below), whose sum is σ = 14988250368. Its totient is φ = 9517132800.

The previous prime is 12103130197. The next prime is 12103130227. The reversal of 12103130221 is 12203130121.

It is not a de Polignac number, because 12103130221 - 2¹⁷ = 12102999149 is a prime.

It is a super-2 number, since 2×12103130221² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12103130195 and 12103130204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12103130227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17265171 + ... + 17265871.

It is an arithmetic number, because the mean of its divisors is an integer number (468382824).

Almost surely, 2^12103130221 is an apocalyptic number.

It is an amenable number.

12103130221 is a deficient number, since it is larger than the sum of its proper divisors (2885120147).

12103130221 is a wasteful number, since it uses less digits than its factorization.

12103130221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1621.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 12103130221 its reverse (12203130121), we get a palindrome (24306260342).

The spelling of 12103130221 in words is "twelve billion, one hundred three million, one hundred thirty thousand, two hundred twenty-one".