123281212 has 12 divisors (see below), whose sum is σ = 228432960. Its totient is φ = 58014656.

The previous prime is 123281201. The next prime is 123281251. The reversal of 123281212 is 212182321.

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, 906412 + ... + 906547.

It is an arithmetic number, because the mean of its divisors is an integer number (19036080).

Almost surely, 2^123281212 is an apocalyptic number.

It is an amenable number.

123281212 is a deficient number, since it is larger than the sum of its proper divisors (105151748).

123281212 is a wasteful number, since it uses less digits than its factorization.

123281212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1812980 (or 1812978 counting only the distinct ones).

The product of its digits is 384, while the sum is 22.

The square root of 123281212 is about 11103.2072843841. The cubic root of 123281212 is about 497.6976977468.

The spelling of 123281212 in words is "one hundred twenty-three million, two hundred eighty-one thousand, two hundred twelve".