144322013021 has 8 divisors (see below), whose sum is σ = 146868302904. Its totient is φ = 141791109120.

The previous prime is 144322012987. The next prime is 144322013023. The reversal of 144322013021 is 120310223441.

It can be written as a sum of positive squares in 4 ways, for example, as 26240436121 + 118081576900 = 161989^2 + 343630^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144322013021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144322013023) 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, 3827570 + ... + 3865091.

It is an arithmetic number, because the mean of its divisors is an integer number (18358537863).

Almost surely, 2^144322013021 is an apocalyptic number.

It is an amenable number.

144322013021 is a deficient number, since it is larger than the sum of its proper divisors (2546289883).

144322013021 is an equidigital number, since it uses as much as digits as its factorization.

144322013021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7692991.

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

Adding to 144322013021 its reverse (120310223441), we get a palindrome (264632236462).

The spelling of 144322013021 in words is "one hundred forty-four billion, three hundred twenty-two million, thirteen thousand, twenty-one".