12013441402 has 4 divisors (see below), whose sum is σ = 18020162106. Its totient is φ = 6006720700.

The previous prime is 12013441381. The next prime is 12013441403. The reversal of 12013441402 is 20414431021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20414431021 = 3313 ⋅6161917.

It can be written as a sum of positive squares in only one way, i.e., 11739505801 + 273935601 = 108349^2 + 16551^2 .

It is not an unprimeable number, because it can be changed into a prime (12013441403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3003360349 + ... + 3003360352.

Almost surely, 2^12013441402 is an apocalyptic number.

12013441402 is a deficient number, since it is larger than the sum of its proper divisors (6006720704).

12013441402 is an equidigital number, since it uses as much as digits as its factorization.

12013441402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6006720703.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 12013441402 its reverse (20414431021), we get a palindrome (32427872423).

The spelling of 12013441402 in words is "twelve billion, thirteen million, four hundred forty-one thousand, four hundred two".