123213100112 has 40 divisors (see below), whose sum is σ = 240881680800. Its totient is φ = 61052164992.

The previous prime is 123213100103. The next prime is 123213100117. The reversal of 123213100112 is 211001312321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123213100117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 887339 + ... + 1016757.

It is an arithmetic number, because the mean of its divisors is an integer number (6022042020).

Almost surely, 2^123213100112 is an apocalyptic number.

It is an amenable number.

123213100112 is a deficient number, since it is larger than the sum of its proper divisors (117668580688).

123213100112 is a wasteful number, since it uses less digits than its factorization.

123213100112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129963 (or 129957 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 123213100112 its reverse (211001312321), we get a palindrome (334214412433).

The spelling of 123213100112 in words is "one hundred twenty-three billion, two hundred thirteen million, one hundred thousand, one hundred twelve".