21224441233000 has 64 divisors (see below), whose sum is σ = 49701158928720. Its totient is φ = 8483628384000.

The previous prime is 21224441232959. The next prime is 21224441233033. The reversal of 21224441233000 is 33214442212.

It can be written as a sum of positive squares in 8 ways, for example, as 3714785954884 + 17509655278116 = 1927378^2 + 4184454^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 21224441233000.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6303447 + ... + 9065446.

Almost surely, 2^{21224441233000} is an apocalyptic number.

21224441233000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21224441233000 is an abundant number, since it is smaller than the sum of its proper divisors (28476717695720).

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

21224441233000 is a wasteful number, since it uses less digits than its factorization.

21224441233000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15370295 (or 15370281 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 21224441233000 its reverse (33214442212), we get a palindrome (21257655675212).

The spelling of 21224441233000 in words is "twenty-one trillion, two hundred twenty-four billion, four hundred forty-one million, two hundred thirty-three thousand".