20144411021 has 12 divisors (see below), whose sum is σ = 24666626880. Its totient is φ = 16357866840.

The previous prime is 20144410997. The next prime is 20144411047. The reversal of 20144411021 is 12011444102.

It is not a de Polignac number, because 20144411021 - 2¹⁰ = 20144409997 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20144410984 and 20144411002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20144401021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10817765 + ... + 10819626.

It is an arithmetic number, because the mean of its divisors is an integer number (2055552240).

Almost surely, 2^20144411021 is an apocalyptic number.

It is an amenable number.

20144411021 is a deficient number, since it is larger than the sum of its proper divisors (4522215859).

20144411021 is a wasteful number, since it uses less digits than its factorization.

20144411021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21637424 (or 21637417 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 20144411021 its reverse (12011444102), we get a palindrome (32155855123).

The spelling of 20144411021 in words is "twenty billion, one hundred forty-four million, four hundred eleven thousand, twenty-one".