123021212 has 12 divisors (see below), whose sum is σ = 215553240. Its totient is φ = 61434576.

The previous prime is 123021193. The next prime is 123021221. The reversal of 123021212 is 212120321.

It is a happy number.

It is a congruent number.

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, 15287 + ... + 21902.

It is an arithmetic number, because the mean of its divisors is an integer number (17962770).

Almost surely, 2^123021212 is an apocalyptic number.

It is an amenable number.

123021212 is a deficient number, since it is larger than the sum of its proper divisors (92532028).

123021212 is a wasteful number, since it uses less digits than its factorization.

123021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38020 (or 38018 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 123021212 is about 11091.4927759973. The cubic root of 123021212 is about 497.3475701125.

Adding to 123021212 its reverse (212120321), we get a palindrome (335141533).

The spelling of 123021212 in words is "one hundred twenty-three million, twenty-one thousand, two hundred twelve".