12120012130 has 16 divisors (see below), whose sum is σ = 23099317560. Its totient is φ = 4562828032.

The previous prime is 12120012119. The next prime is 12120012139. The reversal of 12120012130 is 3121002121.

It can be written as a sum of positive squares in 4 ways, for example, as 8475595969 + 3644416161 = 92063^2 + 60369^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12120012130.

It is not an unprimeable number, because it can be changed into a prime (12120012139) 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, 35646925 + ... + 35647264.

Almost surely, 2^12120012130 is an apocalyptic number.

12120012130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12120012130 is a deficient number, since it is larger than the sum of its proper divisors (10979305430).

12120012130 is a wasteful number, since it uses less digits than its factorization.

12120012130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71294213.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 12120012130 its reverse (3121002121), we get a palindrome (15241014251).

The spelling of 12120012130 in words is "twelve billion, one hundred twenty million, twelve thousand, one hundred thirty".