111221102211222 has 64 divisors (see below), whose sum is σ = 228175252992000. Its totient is φ = 36125204935680.

The previous prime is 111221102211209. The next prime is 111221102211229. The reversal of 111221102211222 is 222112201122111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111221102211229) 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, 313155822 + ... + 313510782.

It is an arithmetic number, because the mean of its divisors is an integer number (3565238328000).

Almost surely, 2^{111221102211222} is an apocalyptic number.

111221102211222 is an abundant number, since it is smaller than the sum of its proper divisors (116954150780778).

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

111221102211222 is a wasteful number, since it uses less digits than its factorization.

111221102211222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359901.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 111221102211222 its reverse (222112201122111), we get a palindrome (333333303333333).

The spelling of 111221102211222 in words is "one hundred eleven trillion, two hundred twenty-one billion, one hundred two million, two hundred eleven thousand, two hundred twenty-two".