20013110221 has 16 divisors (see below), whose sum is σ = 23265164160. Its totient is φ = 17061105600.

The previous prime is 20013110197. The next prime is 20013110233. The reversal of 20013110221 is 12201131002.

It is not a de Polignac number, because 20013110221 - 2⁵ = 20013110189 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20013110251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1145355 + ... + 1162696.

It is an arithmetic number, because the mean of its divisors is an integer number (1454072760).

Almost surely, 2^20013110221 is an apocalyptic number.

It is an amenable number.

20013110221 is a deficient number, since it is larger than the sum of its proper divisors (3252053939).

20013110221 is a wasteful number, since it uses less digits than its factorization.

20013110221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2308116.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 20013110221 its reverse (12201131002), we get a palindrome (32214241223).

The spelling of 20013110221 in words is "twenty billion, thirteen million, one hundred ten thousand, two hundred twenty-one".