21234201043324 has 96 divisors (see below), whose sum is σ = 40705420492800. Its totient is φ = 9654812858880.

The previous prime is 21234201043277. The next prime is 21234201043333. The reversal of 21234201043324 is 42334010243212.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 1893707142 + ... + 1893718354.

It is an arithmetic number, because the mean of its divisors is an integer number (424014796800).

Almost surely, 2^{21234201043324} is an apocalyptic number.

It is an amenable number.

21234201043324 is a deficient number, since it is larger than the sum of its proper divisors (19471219449476).

21234201043324 is a wasteful number, since it uses less digits than its factorization.

21234201043324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17723 (or 17721 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 21234201043324 its reverse (42334010243212), we get a palindrome (63568211286536).

The spelling of 21234201043324 in words is "twenty-one trillion, two hundred thirty-four billion, two hundred one million, forty-three thousand, three hundred twenty-four".