20110100112221 has 16 divisors (see below), whose sum is σ = 23359286642688. Its totient is φ = 16956088422000.

The previous prime is 20110100112197. The next prime is 20110100112229. The reversal of 20110100112221 is 12221100101102.

It is not a de Polignac number, because 20110100112221 - 2³⁴ = 20092920243037 is a prime.

It is a super-2 number, since 2×20110100112221² (a number of 27 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 = 20110100112196 and 20110100112205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20110100112229) 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, 45449105 + ... + 45889446.

It is an arithmetic number, because the mean of its divisors is an integer number (1459955415168).

Almost surely, 2^{20110100112221} is an apocalyptic number.

It is an amenable number.

20110100112221 is a deficient number, since it is larger than the sum of its proper divisors (3249186530467).

20110100112221 is an equidigital number, since it uses as much as digits as its factorization.

20110100112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91339072.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20110100112221 its reverse (12221100101102), we get a palindrome (32331200213323).

The spelling of 20110100112221 in words is "twenty trillion, one hundred ten billion, one hundred million, one hundred twelve thousand, two hundred twenty-one".