20221440403021 has 96 divisors (see below), whose sum is σ = 24325746232320. Its totient is φ = 16660933286400.

The previous prime is 20221440403001. The next prime is 20221440403033. The reversal of 20221440403021 is 12030404412202.

It is not a de Polignac number, because 20221440403021 - 2¹³ = 20221440394829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20221440403001) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 15663392386 + ... + 15663393676.

It is an arithmetic number, because the mean of its divisors is an integer number (253393189920).

Almost surely, 2^{20221440403021} is an apocalyptic number.

It is an amenable number.

20221440403021 is a deficient number, since it is larger than the sum of its proper divisors (4104305829299).

20221440403021 is a wasteful number, since it uses less digits than its factorization.

20221440403021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2067 (or 2054 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 20221440403021 its reverse (12030404412202), we get a palindrome (32251844815223).

The spelling of 20221440403021 in words is "twenty trillion, two hundred twenty-one billion, four hundred forty million, four hundred three thousand, twenty-one".