123012205205412 has 96 divisors (see below), whose sum is σ = 292408493045760. Its totient is φ = 40241323100160.

The previous prime is 123012205205387. The next prime is 123012205205431. The reversal of 123012205205412 is 214502502210321.

123012205205412 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×123012205205412² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 123012205205412.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 300038014 + ... + 300447722.

It is an arithmetic number, because the mean of its divisors is an integer number (3045921802560).

Almost surely, 2^{123012205205412} is an apocalyptic number.

123012205205412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123012205205412 is an abundant number, since it is smaller than the sum of its proper divisors (169396287840348).

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

123012205205412 is a wasteful number, since it uses less digits than its factorization.

123012205205412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411493 (or 411491 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 123012205205412 its reverse (214502502210321), we get a palindrome (337514707415733).

The spelling of 123012205205412 in words is "one hundred twenty-three trillion, twelve billion, two hundred five million, two hundred five thousand, four hundred twelve".