21244201010 has 8 divisors (see below), whose sum is σ = 38239561836. Its totient is φ = 8497680400.

The previous prime is 21244201003. The next prime is 21244201039. The reversal of 21244201010 is 1010244212.

It can be written as a sum of positive squares in 2 ways, for example, as 20425840561 + 818360449 = 142919^2 + 28607^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 21244201010.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1062210041 + ... + 1062210060.

Almost surely, 2^21244201010 is an apocalyptic number.

21244201010 is a deficient number, since it is larger than the sum of its proper divisors (16995360826).

21244201010 is a wasteful number, since it uses less digits than its factorization.

21244201010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2124420108.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 21244201010 its reverse (1010244212), we get a palindrome (22254445222).

The spelling of 21244201010 in words is "twenty-one billion, two hundred forty-four million, two hundred one thousand, ten".