21444224302 has 4 divisors (see below), whose sum is σ = 32166336456. Its totient is φ = 10722112150.

The previous prime is 21444224299. The next prime is 21444224323. The reversal of 21444224302 is 20342244412.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5361056074 + ... + 5361056077.

It is an arithmetic number, because the mean of its divisors is an integer number (8041584114).

Almost surely, 2^21444224302 is an apocalyptic number.

21444224302 is a deficient number, since it is larger than the sum of its proper divisors (10722112154).

21444224302 is a wasteful number, since it uses less digits than its factorization.

21444224302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10722112153.

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 21444224302 its reverse (20342244412), we get a palindrome (41786468714).

The spelling of 21444224302 in words is "twenty-one billion, four hundred forty-four million, two hundred twenty-four thousand, three hundred two".