11055421420 has 12 divisors (see below), whose sum is σ = 23216385024. Its totient is φ = 4422168560.

The previous prime is 11055421409. The next prime is 11055421457. The reversal of 11055421420 is 2412455011.

It is an unprimeable number.

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, 276385516 + ... + 276385555.

It is an arithmetic number, because the mean of its divisors is an integer number (1934698752).

Almost surely, 2^11055421420 is an apocalyptic number.

11055421420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11055421420 is an abundant number, since it is smaller than the sum of its proper divisors (12160963604).

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

11055421420 is a wasteful number, since it uses less digits than its factorization.

11055421420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552771080 (or 552771078 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

Adding to 11055421420 its reverse (2412455011), we get a palindrome (13467876431).

The spelling of 11055421420 in words is "eleven billion, fifty-five million, four hundred twenty-one thousand, four hundred twenty".