1222220222222 has 16 divisors (see below), whose sum is σ = 1836088195392. Its totient is φ = 610191251040.

The previous prime is 1222220222191. The next prime is 1222220222227. The reversal of 1222220222222 is 2222220222221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222220222227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5735963 + ... + 5945225.

It is an arithmetic number, because the mean of its divisors is an integer number (114755512212).

Almost surely, 2^{1222220222222} is an apocalyptic number.

1222220222222 is a deficient number, since it is larger than the sum of its proper divisors (613867973170).

1222220222222 is a wasteful number, since it uses less digits than its factorization.

1222220222222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213643.

The product of its (nonzero) digits is 2048, while the sum is 23.

Adding to 1222220222222 its reverse (2222220222221), we get a palindrome (3444440444443).

Subtracting 1222220222222 from its reverse (2222220222221), we obtain a palindrome (999999999999).

The spelling of 1222220222222 in words is "one trillion, two hundred twenty-two billion, two hundred twenty million, two hundred twenty-two thousand, two hundred twenty-two".