22122211122212 has 24 divisors (see below), whose sum is σ = 39661032147072. Its totient is φ = 10790527406400.

The previous prime is 22122211122203. The next prime is 22122211122223. The reversal of 22122211122212 is 21222111222122.

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, 2733608 + ... + 7191455.

It is an arithmetic number, because the mean of its divisors is an integer number (1652543006128).

Almost surely, 2^{22122211122212} is an apocalyptic number.

It is an amenable number.

22122211122212 is a deficient number, since it is larger than the sum of its proper divisors (17538821024860).

22122211122212 is a wasteful number, since it uses less digits than its factorization.

22122211122212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9938699 (or 9938697 counting only the distinct ones).

The product of its digits is 512, while the sum is 23.

Adding to 22122211122212 its reverse (21222111222122), we get a palindrome (43344322344334).

It can be divided in two parts, 2 and 2122211122212, that multiplied together give a palindrome (4244422244424).

The spelling of 22122211122212 in words is "twenty-two trillion, one hundred twenty-two billion, two hundred eleven million, one hundred twenty-two thousand, two hundred twelve".