11222221220222 has 4 divisors (see below), whose sum is σ = 16833331830336. Its totient is φ = 5611110610110.

The previous prime is 11222221220213. The next prime is 11222221220257. The reversal of 11222221220222 is 22202212222211.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2805555305054 + ... + 2805555305057.

It is an arithmetic number, because the mean of its divisors is an integer number (4208332957584).

Almost surely, 2^{11222221220222} is an apocalyptic number.

11222221220222 is a deficient number, since it is larger than the sum of its proper divisors (5611110610114).

11222221220222 is an equidigital number, since it uses as much as digits as its factorization.

11222221220222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5611110610113.

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

Adding to 11222221220222 its reverse (22202212222211), we get a palindrome (33424433442433).

The spelling of 11222221220222 in words is "eleven trillion, two hundred twenty-two billion, two hundred twenty-one million, two hundred twenty thousand, two hundred twenty-two".