2121123222212 has 12 divisors (see below), whose sum is σ = 3746656907280. Its totient is φ = 1050649820136.

The previous prime is 2121123222203. The next prime is 2121123222293. The reversal of 2121123222212 is 2122223211212.

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, 2477947262 + ... + 2477948117.

It is an arithmetic number, because the mean of its divisors is an integer number (312221408940).

Almost surely, 2^{2121123222212} is an apocalyptic number.

It is an amenable number.

2121123222212 is a deficient number, since it is larger than the sum of its proper divisors (1625533685068).

2121123222212 is a wasteful number, since it uses less digits than its factorization.

2121123222212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4955895490 (or 4955895488 counting only the distinct ones).

The product of its digits is 768, while the sum is 23.

Adding to 2121123222212 its reverse (2122223211212), we get a palindrome (4243346433424).

The spelling of 2121123222212 in words is "two trillion, one hundred twenty-one billion, one hundred twenty-three million, two hundred twenty-two thousand, two hundred twelve".