2145040221301 has 2 divisors, whose sum is σ = 2145040221302. Its totient is φ = 2145040221300.

The previous prime is 2145040221283. The next prime is 2145040221329. The reversal of 2145040221301 is 1031220405412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1862706336100 + 282333885201 = 1364810^2 + 531351^2 .

It is a cyclic number.

It is not a de Polignac number, because 2145040221301 - 2¹⁹ = 2145039697013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2145040221001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072520110650 + 1072520110651.

It is an arithmetic number, because the mean of its divisors is an integer number (1072520110651).

Almost surely, 2^{2145040221301} is an apocalyptic number.

It is an amenable number.

2145040221301 is a deficient number, since it is larger than the sum of its proper divisors (1).

2145040221301 is an equidigital number, since it uses as much as digits as its factorization.

2145040221301 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 2145040221301 its reverse (1031220405412), we get a palindrome (3176260626713).

The spelling of 2145040221301 in words is "two trillion, one hundred forty-five billion, forty million, two hundred twenty-one thousand, three hundred one".