11222220221222 has 64 divisors (see below), whose sum is σ = 18913635095040. Its totient is φ = 4968849600000.

The previous prime is 11222220221189. The next prime is 11222220221227. The reversal of 11222220221222 is 22212202222211.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11222220221227) 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, 11144222 + ... + 12109422.

It is an arithmetic number, because the mean of its divisors is an integer number (295525548360).

Almost surely, 2^{11222220221222} is an apocalyptic number.

11222220221222 is a deficient number, since it is larger than the sum of its proper divisors (7691414873818).

11222220221222 is a wasteful number, since it uses less digits than its factorization.

11222220221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 965549.

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

Adding to 11222220221222 its reverse (22212202222211), we get a palindrome (33434422443433).

The spelling of 11222220221222 in words is "eleven trillion, two hundred twenty-two billion, two hundred twenty million, two hundred twenty-one thousand, two hundred twenty-two".