102517221941 has 4 divisors (see below), whose sum is σ = 102957210252. Its totient is φ = 102077233632.

The previous prime is 102517221901. The next prime is 102517221943. The reversal of 102517221941 is 149122715201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 149122715201 = 1783 ⋅83635847.

It can be written as a sum of positive squares in 2 ways, for example, as 18866121316 + 83651100625 = 137354^2 + 289225^2 .

It is a cyclic number.

It is not a de Polignac number, because 102517221941 - 2¹⁰ = 102517220917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102517221943) 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, 219993806 + ... + 219994271.

It is an arithmetic number, because the mean of its divisors is an integer number (25739302563).

Almost surely, 2^102517221941 is an apocalyptic number.

It is an amenable number.

102517221941 is a deficient number, since it is larger than the sum of its proper divisors (439988311).

102517221941 is an equidigital number, since it uses as much as digits as its factorization.

102517221941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439988310.

The product of its (nonzero) digits is 10080, while the sum is 35.

The spelling of 102517221941 in words is "one hundred two billion, five hundred seventeen million, two hundred twenty-one thousand, nine hundred forty-one".