21430004200000 has 168 divisors, whose sum is σ = 57985155462528. Its totient is φ = 7792728000000.

The previous prime is 21430004199997. The next prime is 21430004200027. The reversal of 21430004200000 is 240003412.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2670456 + ... + 7070455.

It is an arithmetic number, because the mean of its divisors is an integer number (345149734896).

Almost surely, 2^{21430004200000} is an apocalyptic number.

21430004200000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21430004200000 is an abundant number, since it is smaller than the sum of its proper divisors (36555151262528).

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

21430004200000 is an frugal number, since it uses more digits than its factorization.

21430004200000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9740959 (or 9740929 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 21430004200000 its reverse (240003412), we get a palindrome (21430244203412).

The spelling of 21430004200000 in words is "twenty-one trillion, four hundred thirty billion, four million, two hundred thousand".