2221220222222 has 4 divisors (see below), whose sum is σ = 3331830333336. Its totient is φ = 1110610111110.

The previous prime is 2221220222219. The next prime is 2221220222227. The reversal of 2221220222222 is 2222220221222.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221220222227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555305055554 + ... + 555305055557.

It is an arithmetic number, because the mean of its divisors is an integer number (832957583334).

Almost surely, 2^{2221220222222} is an apocalyptic number.

2221220222222 is a deficient number, since it is larger than the sum of its proper divisors (1110610111114).

2221220222222 is a wasteful number, since it uses less digits than its factorization.

2221220222222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1110610111113.

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

Adding to 2221220222222 its reverse (2222220221222), we get a palindrome (4443440443444).

It can be divided in two parts, 2221220 and 222222, that added together give a palindrome (2443442).

The spelling of 2221220222222 in words is "two trillion, two hundred twenty-one billion, two hundred twenty million, two hundred twenty-two thousand, two hundred twenty-two".