212211112211 has 32 divisors (see below), whose sum is σ = 256468800000. Its totient is φ = 171755603712.

The previous prime is 212211112163. The next prime is 212211112259. The reversal of 212211112211 is 112211112212.

It is an interprime number because it is at equal distance from previous prime (212211112163) and next prime (212211112259).

It is not a de Polignac number, because 212211112211 - 2¹⁰ = 212211111187 is a prime.

It is a super-2 number, since 2×212211112211² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212211112211.

It is not an unprimeable number, because it can be changed into a prime (212211112411) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1834415 + ... + 1946663.

It is an arithmetic number, because the mean of its divisors is an integer number (8014650000).

Almost surely, 2^212211112211 is an apocalyptic number.

212211112211 is a deficient number, since it is larger than the sum of its proper divisors (44257687789).

212211112211 is a wasteful number, since it uses less digits than its factorization.

212211112211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112491.

The product of its digits is 32, while the sum is 17.

Adding to 212211112211 its reverse (112211112212), we get a palindrome (324422224423).

Subtracting from 212211112211 its reverse (112211112212), we obtain a palindrome (99999999999).

The spelling of 212211112211 in words is "two hundred twelve billion, two hundred eleven million, one hundred twelve thousand, two hundred eleven".