12123230223212 has 6 divisors (see below), whose sum is σ = 21215652890628. Its totient is φ = 6061615111604.

The previous prime is 12123230223197. The next prime is 12123230223287. The reversal of 12123230223212 is 21232203232121.

12123230223212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12123230223212² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1515403777898 + ... + 1515403777905.

It is an arithmetic number, because the mean of its divisors is an integer number (3535942148438).

Almost surely, 2^{12123230223212} is an apocalyptic number.

It is an amenable number.

12123230223212 is a deficient number, since it is larger than the sum of its proper divisors (9092422667416).

12123230223212 is a wasteful number, since it uses less digits than its factorization.

12123230223212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3030807555807 (or 3030807555805 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 12123230223212 its reverse (21232203232121), we get a palindrome (33355433455333).

The spelling of 12123230223212 in words is "twelve trillion, one hundred twenty-three billion, two hundred thirty million, two hundred twenty-three thousand, two hundred twelve".