21143014433420 has 48 divisors (see below), whose sum is σ = 48437080731648. Its totient is φ = 7688312256960.

The previous prime is 21143014433417. The next prime is 21143014433447. The reversal of 21143014433420 is 2433441034112.

It is a super-2 number, since 2×21143014433420² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40034399 + ... + 40559081.

It is an arithmetic number, because the mean of its divisors is an integer number (1009105848576).

Almost surely, 2^{21143014433420} is an apocalyptic number.

21143014433420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21143014433420 is an abundant number, since it is smaller than the sum of its proper divisors (27294066298228).

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

21143014433420 is a wasteful number, since it uses less digits than its factorization.

21143014433420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707870 (or 707868 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 21143014433420 its reverse (2433441034112), we get a palindrome (23576455467532).

The spelling of 21143014433420 in words is "twenty-one trillion, one hundred forty-three billion, fourteen million, four hundred thirty-three thousand, four hundred twenty".