20020420440221 has 8 divisors (see below), whose sum is σ = 21093514222080. Its totient is φ = 18949265402688.

The previous prime is 20020420440199. The next prime is 20020420440227. The reversal of 20020420440221 is 12204402402002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20020420440221 - 2⁶ = 20020420440157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020420440227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 484664876 + ... + 484706181.

It is an arithmetic number, because the mean of its divisors is an integer number (2636689277760).

Almost surely, 2^{20020420440221} is an apocalyptic number.

It is an amenable number.

20020420440221 is a deficient number, since it is larger than the sum of its proper divisors (1073093781859).

20020420440221 is a wasteful number, since it uses less digits than its factorization.

20020420440221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 969372163.

The product of its (nonzero) digits is 2048, while the sum is 23.

Adding to 20020420440221 its reverse (12204402402002), we get a palindrome (32224822842223).

The spelling of 20020420440221 in words is "twenty trillion, twenty billion, four hundred twenty million, four hundred forty thousand, two hundred twenty-one".