20020110221 has 8 divisors (see below), whose sum is σ = 20303046144. Its totient is φ = 19739030080.

The previous prime is 20020110181. The next prime is 20020110223. The reversal of 20020110221 is 12201102002.

It is a happy number.

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 20020110221 - 2⁶ = 20020110157 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 (20020110223) 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, 442211 + ... + 485376.

It is an arithmetic number, because the mean of its divisors is an integer number (2537880768).

Almost surely, 2^20020110221 is an apocalyptic number.

It is an amenable number.

20020110221 is a deficient number, since it is larger than the sum of its proper divisors (282935923).

20020110221 is a wasteful number, since it uses less digits than its factorization.

20020110221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 927891.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20020110221 its reverse (12201102002), we get a palindrome (32221212223).

The spelling of 20020110221 in words is "twenty billion, twenty million, one hundred ten thousand, two hundred twenty-one".