12013021019 has 4 divisors (see below), whose sum is σ = 12157756296. Its totient is φ = 11868285744.

The previous prime is 12013021001. The next prime is 12013021037. The reversal of 12013021019 is 91012031021.

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

It is an interprime number because it is at equal distance from previous prime (12013021001) and next prime (12013021037).

It is a cyclic number.

It is not a de Polignac number, because 12013021019 - 2⁸ = 12013020763 is a prime.

It is a super-2 number, since 2×12013021019² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12013023019) 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, 72367514 + ... + 72367679.

It is an arithmetic number, because the mean of its divisors is an integer number (3039439074).

Almost surely, 2^12013021019 is an apocalyptic number.

12013021019 is a deficient number, since it is larger than the sum of its proper divisors (144735277).

12013021019 is an equidigital number, since it uses as much as digits as its factorization.

12013021019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144735276.

The product of its (nonzero) digits is 108, while the sum is 20.

The spelling of 12013021019 in words is "twelve billion, thirteen million, twenty-one thousand, nineteen".