12122111222012 has 18 divisors (see below), whose sum is σ = 23317532124264. Its totient is φ = 5510050555240.

The previous prime is 12122111222009. The next prime is 12122111222041. The reversal of 12122111222012 is 21022211122121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12522841688 + ... + 12522842655.

It is an arithmetic number, because the mean of its divisors is an integer number (1295418451348).

Almost surely, 2^{12122111222012} is an apocalyptic number.

It is an amenable number.

12122111222012 is a deficient number, since it is larger than the sum of its proper divisors (11195420902252).

12122111222012 is a wasteful number, since it uses less digits than its factorization.

12122111222012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25045684369 (or 25045684356 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 12122111222012 its reverse (21022211122121), we get a palindrome (33144322344133).

The spelling of 12122111222012 in words is "twelve trillion, one hundred twenty-two billion, one hundred eleven million, two hundred twenty-two thousand, twelve".