12002020544 has 14 divisors (see below), whose sum is σ = 23816509644. Its totient is φ = 6001010240.

The previous prime is 12002020489. The next prime is 12002020571. The reversal of 12002020544 is 44502020021.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93765722 + ... + 93765849.

Almost surely, 2^12002020544 is an apocalyptic number.

It is an amenable number.

12002020544 is a deficient number, since it is larger than the sum of its proper divisors (11814489100).

12002020544 is an equidigital number, since it uses as much as digits as its factorization.

12002020544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187531583 (or 187531573 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

Adding to 12002020544 its reverse (44502020021), we get a palindrome (56504040565).

The spelling of 12002020544 in words is "twelve billion, two million, twenty thousand, five hundred forty-four".