10144125721 has 4 divisors (see below), whose sum is σ = 10145290000. Its totient is φ = 10142961444.

The previous prime is 10144125713. The next prime is 10144125727. The reversal of 10144125721 is 12752144101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10144125721 - 2³ = 10144125713 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 10144125721.

It is not an unprimeable number, because it can be changed into a prime (10144125727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 568971 + ... + 586528.

It is an arithmetic number, because the mean of its divisors is an integer number (2536322500).

Almost surely, 2^10144125721 is an apocalyptic number.

It is an amenable number.

10144125721 is a deficient number, since it is larger than the sum of its proper divisors (1164279).

10144125721 is an equidigital number, since it uses as much as digits as its factorization.

10144125721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1164278.

The product of its (nonzero) digits is 2240, while the sum is 28.

Adding to 10144125721 its reverse (12752144101), we get a palindrome (22896269822).

The spelling of 10144125721 in words is "ten billion, one hundred forty-four million, one hundred twenty-five thousand, seven hundred twenty-one".