102145291201 has 4 divisors (see below), whose sum is σ = 102146012500. Its totient is φ = 102144569904.

The previous prime is 102145291187. The next prime is 102145291219. The reversal of 102145291201 is 102192541201.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 64353542400 + 37791748801 = 253680^2 + 194401^2 .

It is a cyclic number.

It is not a de Polignac number, because 102145291201 - 2⁵ = 102145291169 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102145291201.

It is not an unprimeable number, because it can be changed into a prime (102145291301) 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, 70326 + ... + 457423.

It is an arithmetic number, because the mean of its divisors is an integer number (25536503125).

Almost surely, 2^102145291201 is an apocalyptic number.

It is an amenable number.

102145291201 is a deficient number, since it is larger than the sum of its proper divisors (721299).

102145291201 is an equidigital number, since it uses as much as digits as its factorization.

102145291201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721298.

The product of its (nonzero) digits is 1440, while the sum is 28.

The spelling of 102145291201 in words is "one hundred two billion, one hundred forty-five million, two hundred ninety-one thousand, two hundred one".