12103212122 has 24 divisors (see below), whose sum is σ = 19046010144. Its totient is φ = 5767896024.

The previous prime is 12103212113. The next prime is 12103212133. The reversal of 12103212122 is 22121230121.

It is a self number, because there is not a number n which added to its sum of digits gives 12103212122.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 279203 + ... + 319625.

It is an arithmetic number, because the mean of its divisors is an integer number (793583756).

Almost surely, 2^12103212122 is an apocalyptic number.

12103212122 is a deficient number, since it is larger than the sum of its proper divisors (6942798022).

12103212122 is a wasteful number, since it uses less digits than its factorization.

12103212122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40754 (or 40731 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 12103212122 its reverse (22121230121), we get a palindrome (34224442243).

The spelling of 12103212122 in words is "twelve billion, one hundred three million, two hundred twelve thousand, one hundred twenty-two".