12210112211 has 4 divisors (see below), whose sum is σ = 13320122424. Its totient is φ = 11100102000.

The previous prime is 12210112169. The next prime is 12210112223. The reversal of 12210112211 is 11221101221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12210112211 - 2²⁶ = 12143003347 is a prime.

It is a super-2 number, since 2×12210112211² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12210112261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 555005090 + ... + 555005111.

It is an arithmetic number, because the mean of its divisors is an integer number (3330030606).

Almost surely, 2^12210112211 is an apocalyptic number.

12210112211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12210112211 is a deficient number, since it is larger than the sum of its proper divisors (1110010213).

12210112211 is a wasteful number, since it uses less digits than its factorization.

12210112211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110010212.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12210112211 its reverse (11221101221), we get a palindrome (23431213432).

It can be divided in two parts, 12210 and 112211, that added together give a palindrome (124421).

The spelling of 12210112211 in words is "twelve billion, two hundred ten million, one hundred twelve thousand, two hundred eleven".