20211002444 has 6 divisors (see below), whose sum is σ = 35369254284. Its totient is φ = 10105501220.

The previous prime is 20211002429. The next prime is 20211002447. The reversal of 20211002444 is 44420011202.

It is not an unprimeable number, because it can be changed into a prime (20211002447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2526375302 + ... + 2526375309.

It is an arithmetic number, because the mean of its divisors is an integer number (5894875714).

Almost surely, 2^20211002444 is an apocalyptic number.

It is an amenable number.

20211002444 is a deficient number, since it is larger than the sum of its proper divisors (15158251840).

20211002444 is a wasteful number, since it uses less digits than its factorization.

20211002444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5052750615 (or 5052750613 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 20211002444 its reverse (44420011202), we get a palindrome (64631013646).

The spelling of 20211002444 in words is "twenty billion, two hundred eleven million, two thousand, four hundred forty-four".