102520000001 has 4 divisors (see below), whose sum is σ = 103817721600. Its totient is φ = 101222278404.

The previous prime is 102519999991. The next prime is 102520000003. The reversal of 102520000001 is 100000025201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 100000025201 = 131 ⋅763358971.

It is a cyclic number.

It is not a de Polignac number, because 102520000001 - 2¹⁴ = 102519983617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102520000003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 648860681 + ... + 648860838.

It is an arithmetic number, because the mean of its divisors is an integer number (25954430400).

Almost surely, 2^102520000001 is an apocalyptic number.

It is an amenable number.

102520000001 is a deficient number, since it is larger than the sum of its proper divisors (1297721599).

102520000001 is an equidigital number, since it uses as much as digits as its factorization.

102520000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1297721598.

The product of its (nonzero) digits is 20, while the sum is 11.

Adding to 102520000001 its reverse (100000025201), we get a palindrome (202520025202).

The spelling of 102520000001 in words is "one hundred two billion, five hundred twenty million, one", and thus it is an aban number.