11222021021212 has 24 divisors (see below), whose sum is σ = 20514025639296. Its totient is φ = 5361386063088.

The previous prime is 11222021021177. The next prime is 11222021021249. The reversal of 11222021021212 is 21212012022211.

It is a self number, because there is not a number n which added to its sum of digits gives 11222021021212.

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, 64315458 + ... + 64489705.

It is an arithmetic number, because the mean of its divisors is an integer number (854751068304).

Almost surely, 2^{11222021021212} is an apocalyptic number.

It is an amenable number.

11222021021212 is a deficient number, since it is larger than the sum of its proper divisors (9292004618084).

11222021021212 is a wasteful number, since it uses less digits than its factorization.

11222021021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128806137 (or 128806135 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 11222021021212 its reverse (21212012022211), we get a palindrome (32434033043423).

The spelling of 11222021021212 in words is "eleven trillion, two hundred twenty-two billion, twenty-one million, twenty-one thousand, two hundred twelve".