111221221202 has 16 divisors (see below), whose sum is σ = 205331485632. Its totient is φ = 43999603920.

The previous prime is 111221221103. The next prime is 111221221207. The reversal of 111221221202 is 202122122111.

It is not an unprimeable number, because it can be changed into a prime (111221221207) by changing a digit.

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, 305552624 + ... + 305552987.

It is an arithmetic number, because the mean of its divisors is an integer number (12833217852).

Almost surely, 2^111221221202 is an apocalyptic number.

111221221202 is a deficient number, since it is larger than the sum of its proper divisors (94110264430).

111221221202 is a wasteful number, since it uses less digits than its factorization.

111221221202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611105633.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 111221221202 its reverse (202122122111), we get a palindrome (313343343313).

Subtracting 111221221202 from its reverse (202122122111), we obtain a palindrome (90900900909).

The spelling of 111221221202 in words is "one hundred eleven billion, two hundred twenty-one million, two hundred twenty-one thousand, two hundred two".