211112221112211 has 16 divisors (see below), whose sum is σ = 290715423833088. Its totient is φ = 136130011029600.

The previous prime is 211112221112207. The next prime is 211112221112251. The reversal of 211112221112211 is 112211122211112.

It is not a de Polignac number, because 211112221112211 - 2² = 211112221112207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211112221112251) 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, 595004580 + ... + 595359281.

It is an arithmetic number, because the mean of its divisors is an integer number (18169713989568).

Almost surely, 2^{211112221112211} is an apocalyptic number.

211112221112211 is a deficient number, since it is larger than the sum of its proper divisors (79603202720877).

211112221112211 is a wasteful number, since it uses less digits than its factorization.

211112221112211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1190365802.

The product of its digits is 64, while the sum is 21.

Adding to 211112221112211 its reverse (112211122211112), we get a palindrome (323323343323323).

The spelling of 211112221112211 in words is "two hundred eleven trillion, one hundred twelve billion, two hundred twenty-one million, one hundred twelve thousand, two hundred eleven".