12120342111420 has 48 divisors (see below), whose sum is σ = 33939073351680. Its totient is φ = 3231889759296.

The previous prime is 12120342111389. The next prime is 12120342111469. The reversal of 12120342111420 is 2411124302121.

It is a super-2 number, since 2×12120342111420² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5324140 + ... + 7251699.

It is an arithmetic number, because the mean of its divisors is an integer number (707064028160).

Almost surely, 2^{12120342111420} is an apocalyptic number.

12120342111420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12120342111420 is an abundant number, since it is smaller than the sum of its proper divisors (21818731240260).

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

12120342111420 is a wasteful number, since it uses less digits than its factorization.

12120342111420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12591914 (or 12591912 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 12120342111420 its reverse (2411124302121), we get a palindrome (14531466413541).

The spelling of 12120342111420 in words is "twelve trillion, one hundred twenty billion, three hundred forty-two million, one hundred eleven thousand, four hundred twenty".