20010110221 has 8 divisors (see below), whose sum is σ = 20284268544. Its totient is φ = 19737774000.

The previous prime is 20010110191. The next prime is 20010110233. The reversal of 20010110221 is 12201101002.

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 20010110221 - 2⁵ = 20010110189 is a prime.

It is a super-2 number, since 2×20010110221² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20010110198 and 20010110207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010110251) 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, 433405 + ... + 477346.

It is an arithmetic number, because the mean of its divisors is an integer number (2535533568).

Almost surely, 2^20010110221 is an apocalyptic number.

It is an amenable number.

20010110221 is a deficient number, since it is larger than the sum of its proper divisors (274158323).

20010110221 is a wasteful number, since it uses less digits than its factorization.

20010110221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911051.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20010110221 its reverse (12201101002), we get a palindrome (32211211223).

The spelling of 20010110221 in words is "twenty billion, ten million, one hundred ten thousand, two hundred twenty-one".