20021441144 has 32 divisors (see below), whose sum is σ = 39755227680. Its totient is φ = 9420248064.

The previous prime is 20021441137. The next prime is 20021441177. The reversal of 20021441144 is 44114412002.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 1261949 + ... + 1277715.

It is an arithmetic number, because the mean of its divisors is an integer number (1242350865).

Almost surely, 2^20021441144 is an apocalyptic number.

It is an amenable number.

20021441144 is a deficient number, since it is larger than the sum of its proper divisors (19733786536).

20021441144 is a wasteful number, since it uses less digits than its factorization.

20021441144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25127 (or 25123 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 20021441144 its reverse (44114412002), we get a palindrome (64135853146).

The spelling of 20021441144 in words is "twenty billion, twenty-one million, four hundred forty-one thousand, one hundred forty-four".