12013420036 has 24 divisors (see below), whose sum is σ = 21634242840. Its totient is φ = 5832847872.

The previous prime is 12013420019. The next prime is 12013420037. The reversal of 12013420036 is 63002431021.

It can be written as a sum of positive squares in 4 ways, for example, as 2884764100 + 9128655936 = 53710^2 + 95544^2 .

It is a super-2 number, since 2×12013420036² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12013419989 and 12013420016.

It is not an unprimeable number, because it can be changed into a prime (12013420037) 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, 4405 + ... + 155068.

It is an arithmetic number, because the mean of its divisors is an integer number (901426785).

Almost surely, 2^12013420036 is an apocalyptic number.

It is an amenable number.

12013420036 is a deficient number, since it is larger than the sum of its proper divisors (9620822804).

12013420036 is a wasteful number, since it uses less digits than its factorization.

12013420036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160023 (or 160021 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 12013420036 its reverse (63002431021), we get a palindrome (75015851057).

The spelling of 12013420036 in words is "twelve billion, thirteen million, four hundred twenty thousand, thirty-six".