11110420421 has 16 divisors (see below), whose sum is σ = 11567271744. Its totient is φ = 10662246144.

The previous prime is 11110420361. The next prime is 11110420439. The reversal of 11110420421 is 12402401111.

It is a cyclic number.

It is not a de Polignac number, because 11110420421 - 2⁶ = 11110420357 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11110420421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11110420441) 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 15 ways as a sum of consecutive naturals, for example, 2094845 + ... + 2100141.

It is an arithmetic number, because the mean of its divisors is an integer number (722954484).

Almost surely, 2^11110420421 is an apocalyptic number.

It is an amenable number.

11110420421 is a deficient number, since it is larger than the sum of its proper divisors (456851323).

11110420421 is an equidigital number, since it uses as much as digits as its factorization.

11110420421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6100.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 11110420421 its reverse (12402401111), we get a palindrome (23512821532).

The spelling of 11110420421 in words is "eleven billion, one hundred ten million, four hundred twenty thousand, four hundred twenty-one".