2012122212111 has 24 divisors (see below), whose sum is σ = 3276550408880. Its totient is φ = 1219468005360.

The previous prime is 2012122212031. The next prime is 2012122212161. The reversal of 2012122212111 is 1112122212102.

2012122212111 is a `hidden beast` number, since 20 + 1 + 212 + 221 + 211 + 1 = 666.

It is not a de Polignac number, because 2012122212111 - 2¹⁰ = 2012122211087 is a prime.

It is a super-4 number, since 4×2012122212111⁴ (a number of 50 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012122212161) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 307943200 + ... + 307949733.

Almost surely, 2^{2012122212111} is an apocalyptic number.

2012122212111 is a deficient number, since it is larger than the sum of its proper divisors (1264428196769).

2012122212111 is a wasteful number, since it uses less digits than its factorization.

2012122212111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615892964 (or 615892947 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 2012122212111 its reverse (1112122212102), we get a palindrome (3124244424213).

Subtracting from 2012122212111 its reverse (1112122212102), we obtain a palindrome (900000000009).

The spelling of 2012122212111 in words is "two trillion, twelve billion, one hundred twenty-two million, two hundred twelve thousand, one hundred eleven".