10251220234321 has 16 divisors (see below), whose sum is σ = 11486235254400. Its totient is φ = 9066756314880.

The previous prime is 10251220234309. The next prime is 10251220234327. The reversal of 10251220234321 is 12343202215201.

It is a happy number.

It is not a de Polignac number, because 10251220234321 - 2⁹ = 10251220233809 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10251220234321.

It is not an unprimeable number, because it can be changed into a prime (10251220234327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4703545 + ... + 6528841.

It is an arithmetic number, because the mean of its divisors is an integer number (717889703400).

Almost surely, 2^{10251220234321} is an apocalyptic number.

10251220234321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10251220234321 is a deficient number, since it is larger than the sum of its proper divisors (1235015020079).

10251220234321 is a wasteful number, since it uses less digits than its factorization.

10251220234321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1839144.

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

Adding to 10251220234321 its reverse (12343202215201), we get a palindrome (22594422449522).

The spelling of 10251220234321 in words is "ten trillion, two hundred fifty-one billion, two hundred twenty million, two hundred thirty-four thousand, three hundred twenty-one".