12111434120 has 16 divisors (see below), whose sum is σ = 27250726860. Its totient is φ = 4844573632.

The previous prime is 12111434087. The next prime is 12111434131. The reversal of 12111434120 is 2143411121.

It can be written as a sum of positive squares in 2 ways, for example, as 11495699524 + 615734596 = 107218^2 + 24814^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 12111434092 and 12111434101.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151392887 + ... + 151392966.

Almost surely, 2^12111434120 is an apocalyptic number.

12111434120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12111434120 is an abundant number, since it is smaller than the sum of its proper divisors (15139292740).

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

12111434120 is a wasteful number, since it uses less digits than its factorization.

12111434120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302785864 (or 302785860 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 12111434120 its reverse (2143411121), we get a palindrome (14254845241).

The spelling of 12111434120 in words is "twelve billion, one hundred eleven million, four hundred thirty-four thousand, one hundred twenty".