1012310564621 has 4 divisors (see below), whose sum is σ = 1047217825500. Its totient is φ = 977403303744.

The previous prime is 1012310564567. The next prime is 1012310564647. The reversal of 1012310564621 is 1264650132101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 260472433225 + 751838131396 = 510365^2 + 867086^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1012310564621 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012310564651) 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 in 3 ways as a sum of consecutive naturals, for example, 17453630396 + ... + 17453630453.

It is an arithmetic number, because the mean of its divisors is an integer number (261804456375).

Almost surely, 2^{1012310564621} is an apocalyptic number.

It is an amenable number.

1012310564621 is a deficient number, since it is larger than the sum of its proper divisors (34907260879).

1012310564621 is an equidigital number, since it uses as much as digits as its factorization.

1012310564621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34907260878.

The product of its (nonzero) digits is 8640, while the sum is 32.

Adding to 1012310564621 its reverse (1264650132101), we get a palindrome (2276960696722).

The spelling of 1012310564621 in words is "one trillion, twelve billion, three hundred ten million, five hundred sixty-four thousand, six hundred twenty-one".