20442242001 has 4 divisors (see below), whose sum is σ = 27256322672. Its totient is φ = 13628161332.

The previous prime is 20442241933. The next prime is 20442242047. The reversal of 20442242001 is 10024224402.

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 not a de Polignac number, because 20442242001 - 2⁹ = 20442241489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20442242801) by changing a digit.

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, 3407040331 + ... + 3407040336.

It is an arithmetic number, because the mean of its divisors is an integer number (6814080668).

Almost surely, 2^20442242001 is an apocalyptic number.

It is an amenable number.

20442242001 is a deficient number, since it is larger than the sum of its proper divisors (6814080671).

20442242001 is an equidigital number, since it uses as much as digits as its factorization.

20442242001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6814080670.

The product of its (nonzero) digits is 1024, while the sum is 21.

Adding to 20442242001 its reverse (10024224402), we get a palindrome (30466466403).

The spelling of 20442242001 in words is "twenty billion, four hundred forty-two million, two hundred forty-two thousand, one".