20020100221001 has 8 divisors (see below), whose sum is σ = 20059890084864. Its totient is φ = 19980345745120.

The previous prime is 20020100220973. The next prime is 20020100221087. The reversal of 20020100221001 is 10012200102002.

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 a de Polignac number, because none of the positive numbers 2^k-20020100221001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20020100221201) 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, 7714265 + ... + 9977478.

It is an arithmetic number, because the mean of its divisors is an integer number (2507486260608).

Almost surely, 2^{20020100221001} is an apocalyptic number.

It is an amenable number.

20020100221001 is a deficient number, since it is larger than the sum of its proper divisors (39789863863).

20020100221001 is a wasteful number, since it uses less digits than its factorization.

20020100221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17693991.

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

Adding to 20020100221001 its reverse (10012200102002), we get a palindrome (30032300323003).

The spelling of 20020100221001 in words is "twenty trillion, twenty billion, one hundred million, two hundred twenty-one thousand, one".