220211111211 has 16 divisors (see below), whose sum is σ = 361372080384. Its totient is φ = 116155311264.

The previous prime is 220211111207. The next prime is 220211111249. The reversal of 220211111211 is 112111112022.

It is a happy number.

It is not a de Polignac number, because 220211111211 - 2² = 220211111207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220211111011) 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, 403316781 + ... + 403317326.

It is an arithmetic number, because the mean of its divisors is an integer number (22585755024).

Almost surely, 2^220211111211 is an apocalyptic number.

220211111211 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

220211111211 is a deficient number, since it is larger than the sum of its proper divisors (141160969173).

220211111211 is a wasteful number, since it uses less digits than its factorization.

220211111211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806634130.

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

Adding to 220211111211 its reverse (112111112022), we get a palindrome (332322223233).

The spelling of 220211111211 in words is "two hundred twenty billion, two hundred eleven million, one hundred eleven thousand, two hundred eleven".