11111022200121 has 8 divisors (see below), whose sum is σ = 14839678893600. Its totient is φ = 7394856820032.

The previous prime is 11111022200087. The next prime is 11111022200233. The reversal of 11111022200121 is 12100222011111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11111022200121 - 2⁹ = 11111022199609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11111022200121.

It is not an unprimeable number, because it can be changed into a prime (11111022200021) 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, 3122826271 + ... + 3122829828.

It is an arithmetic number, because the mean of its divisors is an integer number (1854959861700).

Almost surely, 2^{11111022200121} is an apocalyptic number.

It is an amenable number.

11111022200121 is a deficient number, since it is larger than the sum of its proper divisors (3728656693479).

11111022200121 is an equidigital number, since it uses as much as digits as its factorization.

11111022200121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6245656695.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11111022200121 its reverse (12100222011111), we get a palindrome (23211244211232).

The spelling of 11111022200121 in words is "eleven trillion, one hundred eleven billion, twenty-two million, two hundred thousand, one hundred twenty-one".