11421171420 has 48 divisors (see below), whose sum is σ = 31986503808. Its totient is φ = 3044957760.

The previous prime is 11421171403. The next prime is 11421171427. The reversal of 11421171420 is 2417112411.

It is a happy number.

11421171420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11421171427) 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 15 ways as a sum of consecutive naturals, for example, 281667 + ... + 319653.

It is an arithmetic number, because the mean of its divisors is an integer number (666385496).

Almost surely, 2^11421171420 is an apocalyptic number.

11421171420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11421171420 is an abundant number, since it is smaller than the sum of its proper divisors (20565332388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11421171420 is a wasteful number, since it uses less digits than its factorization.

11421171420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43010 (or 43008 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 24.

Adding to 11421171420 its reverse (2417112411), we get a palindrome (13838283831).

The spelling of 11421171420 in words is "eleven billion, four hundred twenty-one million, one hundred seventy-one thousand, four hundred twenty".