11101221222 has 64 divisors (see below), whose sum is σ = 28064676864. Its totient is φ = 2848659840.

The previous prime is 11101221191. The next prime is 11101221227. The reversal of 11101221222 is 22212210111.

It is a super-4 number, since 4×11101221222⁴ (a number of 41 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11101221227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 254554 + ... + 294957.

It is an arithmetic number, because the mean of its divisors is an integer number (438510576).

Almost surely, 2^11101221222 is an apocalyptic number.

11101221222 is an abundant number, since it is smaller than the sum of its proper divisors (16963455642).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11101221222 is a wasteful number, since it uses less digits than its factorization.

11101221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549573.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 11101221222 its reverse (22212210111), we get a palindrome (33313431333).

The spelling of 11101221222 in words is "eleven billion, one hundred one million, two hundred twenty-one thousand, two hundred twenty-two".