145241024221 has 2 divisors, whose sum is σ = 145241024222. Its totient is φ = 145241024220.

The previous prime is 145241024171. The next prime is 145241024233. The reversal of 145241024221 is 122420142541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85772836900 + 59468187321 = 292870^2 + 243861^2 .

It is a cyclic number.

It is not a de Polignac number, because 145241024221 - 2²⁹ = 144704153309 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145241024221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145241024251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72620512110 + 72620512111.

It is an arithmetic number, because the mean of its divisors is an integer number (72620512111).

Almost surely, 2^145241024221 is an apocalyptic number.

It is an amenable number.

145241024221 is a deficient number, since it is larger than the sum of its proper divisors (1).

145241024221 is an equidigital number, since it uses as much as digits as its factorization.

145241024221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5120, while the sum is 28.

Adding to 145241024221 its reverse (122420142541), we get a palindrome (267661166762).

The spelling of 145241024221 in words is "one hundred forty-five billion, two hundred forty-one million, twenty-four thousand, two hundred twenty-one".