123123212 has 12 divisors (see below), whose sum is σ = 222895680. Its totient is φ = 59438736.

The previous prime is 123123151. The next prime is 123123229. The reversal of 123123212 is 212321321.

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, 530588 + ... + 530819.

It is an arithmetic number, because the mean of its divisors is an integer number (18574640).

Almost surely, 2^123123212 is an apocalyptic number.

It is an amenable number.

123123212 is a deficient number, since it is larger than the sum of its proper divisors (99772468).

123123212 is a wasteful number, since it uses less digits than its factorization.

123123212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1061440 (or 1061438 counting only the distinct ones).

The product of its digits is 144, while the sum is 17.

The square root of 123123212 is about 11096.0899419570. The cubic root of 123123212 is about 497.4849866264.

Adding to 123123212 its reverse (212321321), we get a palindrome (335444533).

The spelling of 123123212 in words is "one hundred twenty-three million, one hundred twenty-three thousand, two hundred twelve".