123133211212 has 12 divisors (see below), whose sum is σ = 235072494216. Its totient is φ = 55969641440.

The previous prime is 123133211189. The next prime is 123133211219. The reversal of 123133211212 is 212112331321.

123133211212 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (123133211219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1399240993 + ... + 1399241080.

It is an arithmetic number, because the mean of its divisors is an integer number (19589374518).

Almost surely, 2^123133211212 is an apocalyptic number.

It is an amenable number.

123133211212 is a deficient number, since it is larger than the sum of its proper divisors (111939283004).

123133211212 is a wasteful number, since it uses less digits than its factorization.

123133211212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2798482088 (or 2798482086 counting only the distinct ones).

The product of its digits is 432, while the sum is 22.

Adding to 123133211212 its reverse (212112331321), we get a palindrome (335245542533).

The spelling of 123133211212 in words is "one hundred twenty-three billion, one hundred thirty-three million, two hundred eleven thousand, two hundred twelve".