12120101018 has 4 divisors (see below), whose sum is σ = 18180151530. Its totient is φ = 6060050508.

The previous prime is 12120101017. The next prime is 12120101039. The reversal of 12120101018 is 81010102121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11707889209 + 412211809 = 108203^2 + 20303^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12120100987 and 12120101005.

It is not an unprimeable number, because it can be changed into a prime (12120101011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3030025253 + ... + 3030025256.

Almost surely, 2^12120101018 is an apocalyptic number.

12120101018 is a deficient number, since it is larger than the sum of its proper divisors (6060050512).

12120101018 is an equidigital number, since it uses as much as digits as its factorization.

12120101018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6060050511.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 12120101018 its reverse (81010102121), we get a palindrome (93130203139).

The spelling of 12120101018 in words is "twelve billion, one hundred twenty million, one hundred one thousand, eighteen".