21445243001302 has 16 divisors (see below), whose sum is σ = 32172712063632. Its totient is φ = 10721005793280.

The previous prime is 21445243001291. The next prime is 21445243001339. The reversal of 21445243001302 is 20310034254412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 555657718 + ... + 555696310.

It is an arithmetic number, because the mean of its divisors is an integer number (2010794503977).

Almost surely, 2^{21445243001302} is an apocalyptic number.

21445243001302 is a deficient number, since it is larger than the sum of its proper divisors (10727469062330).

21445243001302 is a wasteful number, since it uses less digits than its factorization.

21445243001302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73263.

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 21445243001302 its reverse (20310034254412), we get a palindrome (41755277255714).

The spelling of 21445243001302 in words is "twenty-one trillion, four hundred forty-five billion, two hundred forty-three million, one thousand, three hundred two".