11120010421 has 4 divisors (see below), whose sum is σ = 11975395852. Its totient is φ = 10264624992.

The previous prime is 11120010397. The next prime is 11120010443. The reversal of 11120010421 is 12401002111.

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 2429109796 + 8690900625 = 49286^2 + 93225^2 .

It is a cyclic number.

It is not a de Polignac number, because 11120010421 - 2¹¹ = 11120008373 is a prime.

It is a super-3 number, since 3×11120010421³ (a number of 31 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 855385417 = 11120010421 / (1 + 1 + 1 + 2 + 0 + 0 + 1 + 0 + 4 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11120010481) 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 3 ways as a sum of consecutive naturals, for example, 427692696 + ... + 427692721.

It is an arithmetic number, because the mean of its divisors is an integer number (2993848963).

Almost surely, 2^11120010421 is an apocalyptic number.

It is an amenable number.

11120010421 is a deficient number, since it is larger than the sum of its proper divisors (855385431).

11120010421 is an equidigital number, since it uses as much as digits as its factorization.

11120010421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855385430.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 11120010421 its reverse (12401002111), we get a palindrome (23521012532).

The spelling of 11120010421 in words is "eleven billion, one hundred twenty million, ten thousand, four hundred twenty-one".