11110220112121 has 12 divisors (see below), whose sum is σ = 12445441428780. Its totient is φ = 9901946832960.

The previous prime is 11110220112109. The next prime is 11110220112223. The reversal of 11110220112121 is 12121102201111.

It can be written as a sum of positive squares in 6 ways, for example, as 422420703721 + 10687799408400 = 649939^2 + 3269220^2 .

It is not a de Polignac number, because 11110220112121 - 2³⁷ = 10972781158649 is a prime.

It is a super-2 number, since 2×11110220112121² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11110220112095 and 11110220112104.

It is not an unprimeable number, because it can be changed into a prime (11110220712121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1133459710 + ... + 1133469511.

It is an arithmetic number, because the mean of its divisors is an integer number (1037120119065).

Almost surely, 2^{11110220112121} is an apocalyptic number.

It is an amenable number.

11110220112121 is a deficient number, since it is larger than the sum of its proper divisors (1335221316659).

11110220112121 is a wasteful number, since it uses less digits than its factorization.

11110220112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2266929276 (or 2266929263 counting only the distinct ones).

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

Adding to 11110220112121 its reverse (12121102201111), we get a palindrome (23231322313232).

The spelling of 11110220112121 in words is "eleven trillion, one hundred ten billion, two hundred twenty million, one hundred twelve thousand, one hundred twenty-one".