20144221303057 has 2 divisors, whose sum is σ = 20144221303058. Its totient is φ = 20144221303056.

The previous prime is 20144221302943. The next prime is 20144221303103. The reversal of 20144221303057 is 75030312244102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15794456402176 + 4349764900881 = 3974224^2 + 2085609^2 .

It is a cyclic number.

It is not a de Polignac number, because 20144221303057 - 2³¹ = 20142073819409 is a prime.

It is not a weakly prime, because it can be changed into another prime (20144221304057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10072110651528 + 10072110651529.

It is an arithmetic number, because the mean of its divisors is an integer number (10072110651529).

Almost surely, 2^{20144221303057} is an apocalyptic number.

It is an amenable number.

20144221303057 is a deficient number, since it is larger than the sum of its proper divisors (1).

20144221303057 is an equidigital number, since it uses as much as digits as its factorization.

20144221303057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 34.

Adding to 20144221303057 its reverse (75030312244102), we get a palindrome (95174533547159).

The spelling of 20144221303057 in words is "twenty trillion, one hundred forty-four billion, two hundred twenty-one million, three hundred three thousand, fifty-seven".