11021221222 has 16 divisors (see below), whose sum is σ = 18036347472. Its totient is φ = 5009195520.

The previous prime is 11021221217. The next prime is 11021221231. The reversal of 11021221222 is 22212212011.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 11021221196 and 11021221205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 427318 + ... + 452374.

It is an arithmetic number, because the mean of its divisors is an integer number (1127271717).

Almost surely, 2^11021221222 is an apocalyptic number.

11021221222 is a deficient number, since it is larger than the sum of its proper divisors (7015126250).

11021221222 is a wasteful number, since it uses less digits than its factorization.

11021221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45063.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 11021221222 its reverse (22212212011), we get a palindrome (33233433233).

The spelling of 11021221222 in words is "eleven billion, twenty-one million, two hundred twenty-one thousand, two hundred twenty-two".