21315244230010 has 16 divisors (see below), whose sum is σ = 39303230824872. Its totient is φ = 8318144089600.

The previous prime is 21315244230001. The next prime is 21315244230029. The reversal of 21315244230010 is 1003244251312.

It can be written as a sum of positive squares in 4 ways, for example, as 9174556276209 + 12140687953801 = 3028953^2 + 3484349^2 .

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, 25994199871 + ... + 25994200690.

Almost surely, 2^{21315244230010} is an apocalyptic number.

21315244230010 is a deficient number, since it is larger than the sum of its proper divisors (17987986594862).

21315244230010 is a wasteful number, since it uses less digits than its factorization.

21315244230010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51988400609.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 21315244230010 its reverse (1003244251312), we get a palindrome (22318488481322).

The spelling of 21315244230010 in words is "twenty-one trillion, three hundred fifteen billion, two hundred forty-four million, two hundred thirty thousand, ten".