78101222105 has 8 divisors (see below), whose sum is σ = 93748504200. Its totient is φ = 62462952576.

The previous prime is 78101222099. The next prime is 78101222119. The reversal of 78101222105 is 50122210187.

It can be written as a sum of positive squares in 4 ways, for example, as 7950932224 + 70150289881 = 89168^2 + 264859^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78101222105 - 2¹⁸ = 78100959961 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2234060 + ... + 2268749.

It is an arithmetic number, because the mean of its divisors is an integer number (11718563025).

Almost surely, 2^78101222105 is an apocalyptic number.

It is an amenable number.

78101222105 is a deficient number, since it is larger than the sum of its proper divisors (15647282095).

78101222105 is a wasteful number, since it uses less digits than its factorization.

78101222105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4506283.

The product of its (nonzero) digits is 2240, while the sum is 29.

The spelling of 78101222105 in words is "seventy-eight billion, one hundred one million, two hundred twenty-two thousand, one hundred five".