11220221222 has 16 divisors (see below), whose sum is σ = 19236613920. Its totient is φ = 4808179008.

The previous prime is 11220221213. The next prime is 11220221231. The reversal of 11220221222 is 22212202211.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11220221213) and next prime (11220221231).

It is a super-3 number, since 3×11220221222³ (a number of 31 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11220221222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126104 + ... + 195812.

It is an arithmetic number, because the mean of its divisors is an integer number (1202288370).

Almost surely, 2^11220221222 is an apocalyptic number.

11220221222 is a deficient number, since it is larger than the sum of its proper divisors (8016392698).

11220221222 is a wasteful number, since it uses less digits than its factorization.

11220221222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81215.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 11220221222 its reverse (22212202211), we get a palindrome (33432423433).

The spelling of 11220221222 in words is "eleven billion, two hundred twenty million, two hundred twenty-one thousand, two hundred twenty-two".