12210111222 has 64 divisors (see below), whose sum is σ = 26333233920. Its totient is φ = 3766283136.

The previous prime is 12210111203. The next prime is 12210111281. The reversal of 12210111222 is 22211101221.

It is a super-2 number, since 2×12210111222² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 417193 + ... + 445499.

It is an arithmetic number, because the mean of its divisors is an integer number (411456780).

Almost surely, 2^12210111222 is an apocalyptic number.

12210111222 is an abundant number, since it is smaller than the sum of its proper divisors (14123122698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12210111222 is a wasteful number, since it uses less digits than its factorization.

12210111222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28445.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12210111222 its reverse (22211101221), we get a palindrome (34421212443).

The spelling of 12210111222 in words is "twelve billion, two hundred ten million, one hundred eleven thousand, two hundred twenty-two".