11421120424 has 16 divisors (see below), whose sum is σ = 24473829600. Its totient is φ = 4894765872.

The previous prime is 11421120413. The next prime is 11421120449. The reversal of 11421120424 is 42402112411.

It is a junction number, because it is equal to n+sod(n) for n = 11421120395 and 11421120404.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101974234 + ... + 101974345.

It is an arithmetic number, because the mean of its divisors is an integer number (1529614350).

Almost surely, 2^11421120424 is an apocalyptic number.

11421120424 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

11421120424 is an abundant number, since it is smaller than the sum of its proper divisors (13052709176).

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

11421120424 is a wasteful number, since it uses less digits than its factorization.

11421120424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203948592 (or 203948588 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 11421120424 its reverse (42402112411), we get a palindrome (53823232835).

The spelling of 11421120424 in words is "eleven billion, four hundred twenty-one million, one hundred twenty thousand, four hundred twenty-four".