12002221013 has 4 divisors (see below), whose sum is σ = 12004116588. Its totient is φ = 12000325440.

The previous prime is 12002221003. The next prime is 12002221067. The reversal of 12002221013 is 31012220021.

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: 31012220021 = 277 ⋅111957473.

It can be written as a sum of positive squares in 2 ways, for example, as 9304145764 + 2698075249 = 96458^2 + 51943^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12002221013 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12002221003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 938258 + ... + 950963.

It is an arithmetic number, because the mean of its divisors is an integer number (3001029147).

Almost surely, 2^12002221013 is an apocalyptic number.

It is an amenable number.

12002221013 is a deficient number, since it is larger than the sum of its proper divisors (1895575).

12002221013 is an equidigital number, since it uses as much as digits as its factorization.

12002221013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1895574.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 12002221013 its reverse (31012220021), we get a palindrome (43014441034).

The spelling of 12002221013 in words is "twelve billion, two million, two hundred twenty-one thousand, thirteen".