11110121011021 has 4 divisors (see below), whose sum is σ = 11123145772732. Its totient is φ = 11097096249312.

The previous prime is 11110121011013. The next prime is 11110121011063. The reversal of 11110121011021 is 12011012101111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4543458508521 + 6566662502500 = 2131539^2 + 2562550^2 .

It is a cyclic number.

It is not a de Polignac number, because 11110121011021 - 2³ = 11110121011013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11110121010992 and 11110121011010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11110121011081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6512379576 + ... + 6512381281.

It is an arithmetic number, because the mean of its divisors is an integer number (2780786443183).

Almost surely, 2^{11110121011021} is an apocalyptic number.

It is an amenable number.

11110121011021 is a deficient number, since it is larger than the sum of its proper divisors (13024761711).

11110121011021 is an equidigital number, since it uses as much as digits as its factorization.

11110121011021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13024761710.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 11110121011021 its reverse (12011012101111), we get a palindrome (23121133112132).

The spelling of 11110121011021 in words is "eleven trillion, one hundred ten billion, one hundred twenty-one million, eleven thousand, twenty-one".