220111112110021 has 8 divisors (see below), whose sum is σ = 240121685309184. Its totient is φ = 200100617593920.

The previous prime is 220111112109919. The next prime is 220111112110027. The reversal of 220111112110021 is 120011211111022.

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 220111112110021 - 2¹⁷ = 220111111978949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220111112109977 and 220111112110004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220111112110027) 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, 13743925 + ... + 25082218.

It is an arithmetic number, because the mean of its divisors is an integer number (30015210663648).

Almost surely, 2^{220111112110021} is an apocalyptic number.

It is an amenable number.

220111112110021 is a deficient number, since it is larger than the sum of its proper divisors (20010573199163).

220111112110021 is a wasteful number, since it uses less digits than its factorization.

220111112110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39341531.

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

Adding to 220111112110021 its reverse (120011211111022), we get a palindrome (340122323221043).

The spelling of 220111112110021 in words is "two hundred twenty trillion, one hundred eleven billion, one hundred twelve million, one hundred ten thousand, twenty-one".