220111321321 has 4 divisors (see below), whose sum is σ = 220154904144. Its totient is φ = 220067738500.

The previous prime is 220111321319. The next prime is 220111321349. The reversal of 220111321321 is 123123111022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 220111321321 - 2¹ = 220111321319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220111321351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21783835 + ... + 21793936.

It is an arithmetic number, because the mean of its divisors is an integer number (55038726036).

Almost surely, 2^220111321321 is an apocalyptic number.

It is an amenable number.

220111321321 is a deficient number, since it is larger than the sum of its proper divisors (43582823).

220111321321 is an equidigital number, since it uses as much as digits as its factorization.

220111321321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43582822.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 220111321321 its reverse (123123111022), we get a palindrome (343234432343).

The spelling of 220111321321 in words is "two hundred twenty billion, one hundred eleven million, three hundred twenty-one thousand, three hundred twenty-one".