11112221320121 has 8 divisors (see below), whose sum is σ = 11137831108800. Its totient is φ = 11086612883280.

The previous prime is 11112221320111. The next prime is 11112221320141. The reversal of 11112221320121 is 12102312221111.

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

It is a cyclic number.

It is not a de Polignac number, because 11112221320121 - 2¹⁰ = 11112221319097 is a prime.

It is a super-3 number, since 3×11112221320121³ (a number of 40 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11112221320093 and 11112221320102.

It is not an unprimeable number, because it can be changed into a prime (11112221320111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17163590 + ... + 17799248.

It is an arithmetic number, because the mean of its divisors is an integer number (1392228888600).

Almost surely, 2^{11112221320121} is an apocalyptic number.

It is an amenable number.

11112221320121 is a deficient number, since it is larger than the sum of its proper divisors (25609788679).

11112221320121 is an equidigital number, since it uses as much as digits as its factorization.

11112221320121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675919.

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 11112221320121 its reverse (12102312221111), we get a palindrome (23214533541232).

The spelling of 11112221320121 in words is "eleven trillion, one hundred twelve billion, two hundred twenty-one million, three hundred twenty thousand, one hundred twenty-one".