21143314224 has 80 divisors (see below), whose sum is σ = 61052759040. Its totient is φ = 7005545280.

The previous prime is 21143314223. The next prime is 21143314237. The reversal of 21143314224 is 42241334112.

21143314224 is a `hidden beast` number, since 2 + 1 + 1 + 433 + 1 + 4 + 224 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (21143314223) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 74392 + ... + 218679.

It is an arithmetic number, because the mean of its divisors is an integer number (763159488).

Almost surely, 2^21143314224 is an apocalyptic number.

21143314224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21143314224 is an abundant number, since it is smaller than the sum of its proper divisors (39909444816).

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

21143314224 is a wasteful number, since it uses less digits than its factorization.

21143314224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293255 (or 293243 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

Adding to 21143314224 its reverse (42241334112), we get a palindrome (63384648336).

The spelling of 21143314224 in words is "twenty-one billion, one hundred forty-three million, three hundred fourteen thousand, two hundred twenty-four".