111221121002212 has 24 divisors (see below), whose sum is σ = 209628705451256. Its totient is φ = 51328008004608.

The previous prime is 111221121002207. The next prime is 111221121002249. The reversal of 111221121002212 is 212200121122111.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2862681266916 + 108358439735296 = 1691946^2 + 10409536^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 111221121002212.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99796203 + ... + 100904530.

Almost surely, 2^{111221121002212} is an apocalyptic number.

It is an amenable number.

111221121002212 is a deficient number, since it is larger than the sum of its proper divisors (98407584449044).

111221121002212 is a wasteful number, since it uses less digits than its factorization.

111221121002212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200711407 (or 200711405 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 111221121002212 its reverse (212200121122111), we get a palindrome (323421242124323).

It can be divided in two parts, 11122112 and 1002212, that added together give a square (12124324 = 3482²).

The spelling of 111221121002212 in words is "one hundred eleven trillion, two hundred twenty-one billion, one hundred twenty-one million, two thousand, two hundred twelve".