12001822642 has 8 divisors (see below), whose sum is σ = 18030305196. Its totient is φ = 5991720912.

The previous prime is 12001822633. The next prime is 12001822681. The reversal of 12001822642 is 24622810021.

It can be written as a sum of positive squares in 2 ways, for example, as 9854334361 + 2147488281 = 99269^2 + 46341^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 12001822642.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4593573 + ... + 4596184.

Almost surely, 2^12001822642 is an apocalyptic number.

12001822642 is a deficient number, since it is larger than the sum of its proper divisors (6028482554).

12001822642 is an equidigital number, since it uses as much as digits as its factorization.

12001822642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9190412.

The product of its (nonzero) digits is 3072, while the sum is 28.

The spelling of 12001822642 in words is "twelve billion, one million, eight hundred twenty-two thousand, six hundred forty-two".