20020020281 has 8 divisors (see below), whose sum is σ = 20488316640. Its totient is φ = 19551847392.

The previous prime is 20020020247. The next prime is 20020020311. The reversal of 20020020281 is 18202002002.

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 20020020281 - 2¹⁴ = 20020003897 is a prime.

It is a super-2 number, since 2×20020020281² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20020020221) 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, 352085 + ... + 404973.

It is an arithmetic number, because the mean of its divisors is an integer number (2561039580).

Almost surely, 2^20020020281 is an apocalyptic number.

It is an amenable number.

20020020281 is a deficient number, since it is larger than the sum of its proper divisors (468296359).

20020020281 is an equidigital number, since it uses as much as digits as its factorization.

20020020281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61735.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20020020281 its reverse (18202002002), we get a palindrome (38222022283).

The spelling of 20020020281 in words is "twenty billion, twenty million, twenty thousand, two hundred eighty-one".