12122120212 has 12 divisors (see below), whose sum is σ = 21234994900. Its totient is φ = 6054978816.

The previous prime is 12122120159. The next prime is 12122120221. The reversal of 12122120212 is 21202122121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11574747396 + 547372816 = 107586^2 + 23396^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1515837 + ... + 1523812.

Almost surely, 2^12122120212 is an apocalyptic number.

It is an amenable number.

12122120212 is a deficient number, since it is larger than the sum of its proper divisors (9112874688).

12122120212 is a wasteful number, since it uses less digits than its factorization.

12122120212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3040650 (or 3040648 counting only the distinct ones).

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

Adding to 12122120212 its reverse (21202122121), we get a palindrome (33324242333).

The spelling of 12122120212 in words is "twelve billion, one hundred twenty-two million, one hundred twenty thousand, two hundred twelve".