123045112201212 has 36 divisors (see below), whose sum is σ = 311031489075216. Its totient is φ = 41014933384320.

The previous prime is 123045112201177. The next prime is 123045112201213. The reversal of 123045112201212 is 212102211540321.

123045112201212 is a `hidden beast` number, since 1 + 2 + 3 + 0 + 4 + 511 + 2 + 20 + 121 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123045112201213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10780537 + ... + 19034447.

Almost surely, 2^{123045112201212} is an apocalyptic number.

123045112201212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123045112201212 is an abundant number, since it is smaller than the sum of its proper divisors (187986376874004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123045112201212 is a wasteful number, since it uses less digits than its factorization.

123045112201212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8668018 (or 8668013 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

Adding to 123045112201212 its reverse (212102211540321), we get a palindrome (335147323741533).

The spelling of 123045112201212 in words is "one hundred twenty-three trillion, forty-five billion, one hundred twelve million, two hundred one thousand, two hundred twelve".