1145012042521 has 2 divisors, whose sum is σ = 1145012042522. Its totient is φ = 1145012042520.

The previous prime is 1145012042513. The next prime is 1145012042539. The reversal of 1145012042521 is 1252402105411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 801850402521 + 343161640000 = 895461^2 + 585800^2 .

It is a cyclic number.

It is not a de Polignac number, because 1145012042521 - 2³ = 1145012042513 is a prime.

It is a super-2 number, since 2×1145012042521² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1145012042521.

It is not a weakly prime, because it can be changed into another prime (1145012042501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572506021260 + 572506021261.

It is an arithmetic number, because the mean of its divisors is an integer number (572506021261).

Almost surely, 2^{1145012042521} is an apocalyptic number.

It is an amenable number.

1145012042521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145012042521 is an equidigital number, since it uses as much as digits as its factorization.

1145012042521 is an evil number, because the sum of its binary digits is even.

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

Adding to 1145012042521 its reverse (1252402105411), we get a palindrome (2397414147932).

The spelling of 1145012042521 in words is "one trillion, one hundred forty-five billion, twelve million, forty-two thousand, five hundred twenty-one".