220111323111021 has 8 divisors (see below), whose sum is σ = 293547848778304. Its totient is φ = 146707839758880.

The previous prime is 220111323110983. The next prime is 220111323111023. The reversal of 220111323111021 is 120111323111022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 220111323111021 - 2⁶ = 220111323110957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220111323111023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8260563241 + ... + 8260589886.

It is an arithmetic number, because the mean of its divisors is an integer number (36693481097288).

Almost surely, 2^{220111323111021} is an apocalyptic number.

It is an amenable number.

220111323111021 is a deficient number, since it is larger than the sum of its proper divisors (73436525667283).

220111323111021 is a wasteful number, since it uses less digits than its factorization.

220111323111021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16521157571.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 220111323111021 its reverse (120111323111022), we get a palindrome (340222646222043).

Subtracting from 220111323111021 its reverse (120111323111022), we obtain a palindrome (99999999999999).

The spelling of 220111323111021 in words is "two hundred twenty trillion, one hundred eleven billion, three hundred twenty-three million, one hundred eleven thousand, twenty-one".