212210111211 has 32 divisors (see below), whose sum is σ = 332477515776. Its totient is φ = 117868608000.

The previous prime is 212210111209. The next prime is 212210111219. The reversal of 212210111211 is 112111012212.

It is a happy number.

It is not a de Polignac number, because 212210111211 - 2¹ = 212210111209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212210111219) 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, 221410 + ... + 688071.

It is an arithmetic number, because the mean of its divisors is an integer number (10389922368).

Almost surely, 2^212210111211 is an apocalyptic number.

212210111211 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

212210111211 is a deficient number, since it is larger than the sum of its proper divisors (120267404565).

212210111211 is a wasteful number, since it uses less digits than its factorization.

212210111211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909803.

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

Adding to 212210111211 its reverse (112111012212), we get a palindrome (324321123423).

It can be divided in two parts, 2122101 and 11211, that added together give a palindrome (2133312).

The spelling of 212210111211 in words is "two hundred twelve billion, two hundred ten million, one hundred eleven thousand, two hundred eleven".