11420021020 has 24 divisors (see below), whose sum is σ = 24032131200. Its totient is φ = 4558468032.

The previous prime is 11420021009. The next prime is 11420021021. The reversal of 11420021020 is 2012002411.

It is a happy number.

11420021020 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 (11420021021) 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 7 ways as a sum of consecutive naturals, for example, 586455 + ... + 605614.

It is an arithmetic number, because the mean of its divisors is an integer number (1001338800).

Almost surely, 2^11420021020 is an apocalyptic number.

11420021020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11420021020 is an abundant number, since it is smaller than the sum of its proper divisors (12612110180).

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

11420021020 is a wasteful number, since it uses less digits than its factorization.

11420021020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1192557 (or 1192555 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 11420021020 its reverse (2012002411), we get a palindrome (13432023431).

The spelling of 11420021020 in words is "eleven billion, four hundred twenty million, twenty-one thousand, twenty".