123011212 has 12 divisors (see below), whose sum is σ = 215711496. Its totient is φ = 61379360.

The previous prime is 123011177. The next prime is 123011219. The reversal of 123011212 is 212110321.

It is a junction number, because it is equal to n+sod(n) for n = 123011192 and 123011201.

It is not an unprimeable number, because it can be changed into a prime (123011219) 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, 29353 + ... + 33280.

It is an arithmetic number, because the mean of its divisors is an integer number (17975958).

Almost surely, 2^123011212 is an apocalyptic number.

It is an amenable number.

123011212 is a deficient number, since it is larger than the sum of its proper divisors (92700284).

123011212 is a wasteful number, since it uses less digits than its factorization.

123011212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63128 (or 63126 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 123011212 is about 11091.0419708880. The cubic root of 123011212 is about 497.3340938174.

Adding to 123011212 its reverse (212110321), we get a palindrome (335121533).

The spelling of 123011212 in words is "one hundred twenty-three million, eleven thousand, two hundred twelve".