21043224401330 has 64 divisors (see below), whose sum is σ = 40290386007168. Its totient is φ = 7885796705280.

The previous prime is 21043224401323. The next prime is 21043224401341. The reversal of 21043224401330 is 3310442234012.

It is a junction number, because it is equal to n+sod(n) for n = 21043224401293 and 21043224401302.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32846165 + ... + 33480695.

It is an arithmetic number, because the mean of its divisors is an integer number (629537281362).

Almost surely, 2^{21043224401330} is an apocalyptic number.

21043224401330 is a deficient number, since it is larger than the sum of its proper divisors (19247161605838).

21043224401330 is a wasteful number, since it uses less digits than its factorization.

21043224401330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635451.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 21043224401330 its reverse (3310442234012), we get a palindrome (24353666635342).

The spelling of 21043224401330 in words is "twenty-one trillion, forty-three billion, two hundred twenty-four million, four hundred one thousand, three hundred thirty".