123213030112 has 48 divisors (see below), whose sum is σ = 244835136000. Its totient is φ = 61034821120.

The previous prime is 123213030107. The next prime is 123213030121. The reversal of 123213030112 is 211030312321.

It is a self number, because there is not a number n which added to its sum of digits gives 123213030112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1821537 + ... + 1887967.

It is an arithmetic number, because the mean of its divisors is an integer number (5100732000).

Almost surely, 2^123213030112 is an apocalyptic number.

It is an amenable number.

123213030112 is a deficient number, since it is larger than the sum of its proper divisors (121622105888).

123213030112 is a wasteful number, since it uses less digits than its factorization.

123213030112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66979 (or 66971 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 123213030112 its reverse (211030312321), we get a palindrome (334243342433).

The spelling of 123213030112 in words is "one hundred twenty-three billion, two hundred thirteen million, thirty thousand, one hundred twelve".