12103012212 has 12 divisors (see below), whose sum is σ = 28240361856. Its totient is φ = 4034337400.

The previous prime is 12103012199. The next prime is 12103012277. The reversal of 12103012212 is 21221030121.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×12103012212² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12103012191 and 12103012200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 504292164 + ... + 504292187.

It is an arithmetic number, because the mean of its divisors is an integer number (2353363488).

Almost surely, 2^12103012212 is an apocalyptic number.

12103012212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12103012212 is an abundant number, since it is smaller than the sum of its proper divisors (16137349644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12103012212 is a wasteful number, since it uses less digits than its factorization.

12103012212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1008584358 (or 1008584356 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 12103012212 its reverse (21221030121), we get a palindrome (33324042333).

The spelling of 12103012212 in words is "twelve billion, one hundred three million, twelve thousand, two hundred twelve".