12021211222112 has 24 divisors (see below), whose sum is σ = 23666929004376. Its totient is φ = 6010562586112.

The previous prime is 12021211222099. The next prime is 12021211222123. The reversal of 12021211222112 is 21122211212021.

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, 3459848 + ... + 6001080.

It is an arithmetic number, because the mean of its divisors is an integer number (986122041849).

Almost surely, 2^{12021211222112} is an apocalyptic number.

It is an amenable number.

12021211222112 is a deficient number, since it is larger than the sum of its proper divisors (11645717782264).

12021211222112 is a wasteful number, since it uses less digits than its factorization.

12021211222112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2689070 (or 2689062 counting only the distinct ones).

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

Adding to 12021211222112 its reverse (21122211212021), we get a palindrome (33143422434133).

The spelling of 12021211222112 in words is "twelve trillion, twenty-one billion, two hundred eleven million, two hundred twenty-two thousand, one hundred twelve".