12520215073 has 2 divisors, whose sum is σ = 12520215074. Its totient is φ = 12520215072.

The previous prime is 12520215049. The next prime is 12520215107. The reversal of 12520215073 is 37051202521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11536263649 + 983951424 = 107407^2 + 31368^2 .

It is a cyclic number.

It is not a de Polignac number, because 12520215073 - 2⁹ = 12520214561 is a prime.

It is not a weakly prime, because it can be changed into another prime (12520215023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6260107536 + 6260107537.

It is an arithmetic number, because the mean of its divisors is an integer number (6260107537).

Almost surely, 2^12520215073 is an apocalyptic number.

It is an amenable number.

12520215073 is a deficient number, since it is larger than the sum of its proper divisors (1).

12520215073 is an equidigital number, since it uses as much as digits as its factorization.

12520215073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4200, while the sum is 28.

Adding to 12520215073 its reverse (37051202521), we get a palindrome (49571417594).

The spelling of 12520215073 in words is "twelve billion, five hundred twenty million, two hundred fifteen thousand, seventy-three".