12222112210 has 32 divisors (see below), whose sum is σ = 27428326272. Its totient is φ = 3809489280.

The previous prime is 12222112193. The next prime is 12222112211. The reversal of 12222112210 is 1221122221.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12222112211) 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, 7935667 + ... + 7937206.

It is an arithmetic number, because the mean of its divisors is an integer number (857135196).

Almost surely, 2^12222112210 is an apocalyptic number.

12222112210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12222112210 is an abundant number, since it is smaller than the sum of its proper divisors (15206214062).

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

12222112210 is a wasteful number, since it uses less digits than its factorization.

12222112210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15872898.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12222112210 its reverse (1221122221), we get a palindrome (13443234431).

It can be divided in two parts, 122221 and 12210, that added together give a palindrome (134431).

The spelling of 12222112210 in words is "twelve billion, two hundred twenty-two million, one hundred twelve thousand, two hundred ten".