12112212121210 has 8 divisors (see below), whose sum is σ = 21801981818196. Its totient is φ = 4844884848480.

The previous prime is 12112212121187. The next prime is 12112212121223. The reversal of 12112212121210 is 1212121221121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10769364552241 + 1342847568969 = 3281671^2 + 1158813^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 605610606051 + ... + 605610606070.

Almost surely, 2^{12112212121210} is an apocalyptic number.

12112212121210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12112212121210 is a deficient number, since it is larger than the sum of its proper divisors (9689769696986).

12112212121210 is a wasteful number, since it uses less digits than its factorization.

12112212121210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1211221212128.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 12112212121210 its reverse (1212121221121), we get a palindrome (13324333342331).

The spelling of 12112212121210 in words is "twelve trillion, one hundred twelve billion, two hundred twelve million, one hundred twenty-one thousand, two hundred ten".