123211331212 has 6 divisors (see below), whose sum is σ = 215619829628. Its totient is φ = 61605665604.

The previous prime is 123211331207. The next prime is 123211331279. The reversal of 123211331212 is 212133112321.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15401416398 + ... + 15401416405.

Almost surely, 2^123211331212 is an apocalyptic number.

It is an amenable number.

123211331212 is a deficient number, since it is larger than the sum of its proper divisors (92408498416).

123211331212 is a wasteful number, since it uses less digits than its factorization.

123211331212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30802832807 (or 30802832805 counting only the distinct ones).

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

Adding to 123211331212 its reverse (212133112321), we get a palindrome (335344443533).

The spelling of 123211331212 in words is "one hundred twenty-three billion, two hundred eleven million, three hundred thirty-one thousand, two hundred twelve".