1040241515221 has 2 divisors, whose sum is σ = 1040241515222. Its totient is φ = 1040241515220.

The previous prime is 1040241515191. The next prime is 1040241515231. The reversal of 1040241515221 is 1225151420401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1014995800900 + 25245714321 = 1007470^2 + 158889^2 .

It is a cyclic number.

It is not a de Polignac number, because 1040241515221 - 2²⁹ = 1039704644309 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1040241515221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1040241515231) 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, 520120757610 + 520120757611.

It is an arithmetic number, because the mean of its divisors is an integer number (520120757611).

Almost surely, 2^{1040241515221} is an apocalyptic number.

It is an amenable number.

1040241515221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1040241515221 is an equidigital number, since it uses as much as digits as its factorization.

1040241515221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3200, while the sum is 28.

Adding to 1040241515221 its reverse (1225151420401), we get a palindrome (2265392935622).

The spelling of 1040241515221 in words is "one trillion, forty billion, two hundred forty-one million, five hundred fifteen thousand, two hundred twenty-one".