123216610612 has 12 divisors (see below), whose sum is σ = 215635525056. Its totient is φ = 61606460600.

The previous prime is 123216610607. The next prime is 123216610633. The reversal of 123216610612 is 216016612321.

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, 305014 + ... + 582637.

It is an arithmetic number, because the mean of its divisors is an integer number (17969627088).

Almost surely, 2^123216610612 is an apocalyptic number.

It is an amenable number.

123216610612 is a deficient number, since it is larger than the sum of its proper divisors (92418914444).

123216610612 is a wasteful number, since it uses less digits than its factorization.

123216610612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 922358 (or 922356 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The spelling of 123216610612 in words is "one hundred twenty-three billion, two hundred sixteen million, six hundred ten thousand, six hundred twelve".