220111121211 has 8 divisors (see below), whose sum is σ = 293485353984. Its totient is φ = 146738817960.

The previous prime is 220111121201. The next prime is 220111121213. The reversal of 220111121211 is 112121111022.

It is a happy number.

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

It is not a de Polignac number, because 220111121211 - 2¹⁴ = 220111104827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220111121213) 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, 191071 + ... + 690456.

It is an arithmetic number, because the mean of its divisors is an integer number (36685669248).

Almost surely, 2^220111121211 is an apocalyptic number.

220111121211 is a deficient number, since it is larger than the sum of its proper divisors (73374232773).

220111121211 is an equidigital number, since it uses as much as digits as its factorization.

220111121211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964761.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 220111121211 its reverse (112121111022), we get a palindrome (332232232233).

The spelling of 220111121211 in words is "two hundred twenty billion, one hundred eleven million, one hundred twenty-one thousand, two hundred eleven".