10144323221 has 8 divisors (see below), whose sum is σ = 10522273080. Its totient is φ = 9768249792.

The previous prime is 10144323149. The next prime is 10144323239. The reversal of 10144323221 is 12232344101.

It can be written as a sum of positive squares in 4 ways, for example, as 324504196 + 9819819025 = 18014^2 + 99095^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 10144323221 - 2³⁰ = 9070581397 is a prime.

It is a super-2 number, since 2×10144323221² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10144323251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 458090 + ... + 479723.

It is an arithmetic number, because the mean of its divisors is an integer number (1315284135).

Almost surely, 2^10144323221 is an apocalyptic number.

It is an amenable number.

10144323221 is a deficient number, since it is larger than the sum of its proper divisors (377949859).

10144323221 is an equidigital number, since it uses as much as digits as its factorization.

10144323221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 938215.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 10144323221 its reverse (12232344101), we get a palindrome (22376667322).

The spelling of 10144323221 in words is "ten billion, one hundred forty-four million, three hundred twenty-three thousand, two hundred twenty-one".