12112122210 has 32 divisors (see below), whose sum is σ = 29127384000. Its totient is φ = 3223422528.

The previous prime is 12112122203. The next prime is 12112122227. The reversal of 12112122210 is 1222121121.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12112122210.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 389577 + ... + 419516.

It is an arithmetic number, because the mean of its divisors is an integer number (910230750).

Almost surely, 2^12112122210 is an apocalyptic number.

12112122210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12112122210 is an abundant number, since it is smaller than the sum of its proper divisors (17015261790).

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

12112122210 is a wasteful number, since it uses less digits than its factorization.

12112122210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809602.

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

Adding to 12112122210 its reverse (1222121121), we get a palindrome (13334243331).

The spelling of 12112122210 in words is "twelve billion, one hundred twelve million, one hundred twenty-two thousand, two hundred ten".