2222222211212 has 24 divisors (see below), whose sum is σ = 4098768824640. Its totient is φ = 1051294021200.

The previous prime is 2222222211199. The next prime is 2222222211271. The reversal of 2222222211212 is 2121122222222.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18516914 + ... + 18636537.

It is an arithmetic number, because the mean of its divisors is an integer number (170782034360).

Almost surely, 2^{2222222211212} is an apocalyptic number.

It is an amenable number.

2222222211212 is a deficient number, since it is larger than the sum of its proper divisors (1876546613428).

2222222211212 is a wasteful number, since it uses less digits than its factorization.

2222222211212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37154261 (or 37154259 counting only the distinct ones).

The product of its digits is 1024, while the sum is 23.

Adding to 2222222211212 its reverse (2121122222222), we get a palindrome (4343344433434).

The spelling of 2222222211212 in words is "two trillion, two hundred twenty-two billion, two hundred twenty-two million, two hundred eleven thousand, two hundred twelve".