111222101200121 has 4 divisors (see below), whose sum is σ = 111222676520592. Its totient is φ = 111221525879652.

The previous prime is 111222101200039. The next prime is 111222101200139. The reversal of 111222101200121 is 121002101222111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 111222101200121 - 2¹⁴ = 111222101183737 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111222101200121.

It is not an unprimeable number, because it can be changed into a prime (111222101200421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 287370155 + ... + 287756928.

It is an arithmetic number, because the mean of its divisors is an integer number (27805669130148).

Almost surely, 2^{111222101200121} is an apocalyptic number.

It is an amenable number.

111222101200121 is a deficient number, since it is larger than the sum of its proper divisors (575320471).

111222101200121 is an equidigital number, since it uses as much as digits as its factorization.

111222101200121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575320470.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 111222101200121 its reverse (121002101222111), we get a palindrome (232224202422232).

The spelling of 111222101200121 in words is "one hundred eleven trillion, two hundred twenty-two billion, one hundred one million, two hundred thousand, one hundred twenty-one".