12019646033 has 4 divisors (see below), whose sum is σ = 12043734000. Its totient is φ = 11995558068.

The previous prime is 12019645999. The next prime is 12019646053. The reversal of 12019646033 is 33064691021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12019646033 - 2¹⁰ = 12019645009 is a prime.

It is a super-2 number, since 2×12019646033² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12019645984 and 12019646002.

It is not an unprimeable number, because it can be changed into a prime (12019646053) 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, 12043235 + ... + 12044232.

It is an arithmetic number, because the mean of its divisors is an integer number (3010933500).

Almost surely, 2^12019646033 is an apocalyptic number.

It is an amenable number.

12019646033 is a deficient number, since it is larger than the sum of its proper divisors (24087967).

12019646033 is an equidigital number, since it uses as much as digits as its factorization.

12019646033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24087966.

The product of its (nonzero) digits is 23328, while the sum is 35.

The spelling of 12019646033 in words is "twelve billion, nineteen million, six hundred forty-six thousand, thirty-three".