220111211211 has 16 divisors (see below), whose sum is σ = 300750472704. Its totient is φ = 143116462944.

The previous prime is 220111211141. The next prime is 220111211231. The reversal of 220111211211 is 112112111022.

It is a happy number.

It is not a de Polignac number, because 220111211211 - 2¹⁷ = 220111080139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220111211231) 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, 1172851 + ... + 1347516.

It is an arithmetic number, because the mean of its divisors is an integer number (18796904544).

Almost surely, 2^220111211211 is an apocalyptic number.

220111211211 is a deficient number, since it is larger than the sum of its proper divisors (80639261493).

220111211211 is a wasteful number, since it uses less digits than its factorization.

220111211211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2521090.

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

Adding to 220111211211 its reverse (112112111022), we get a palindrome (332223322233).

The spelling of 220111211211 in words is "two hundred twenty billion, one hundred eleven million, two hundred eleven thousand, two hundred eleven".