109950121705 has 4 divisors (see below), whose sum is σ = 131940146052. Its totient is φ = 87960097360.

The previous prime is 109950121669. The next prime is 109950121711. The reversal of 109950121705 is 507121059901.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16446267049 + 93503854656 = 128243^2 + 305784^2 .

It is not a de Polignac number, because 109950121705 - 2¹³ = 109950113513 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10995012166 + ... + 10995012175.

It is an arithmetic number, because the mean of its divisors is an integer number (32985036513).

Almost surely, 2^109950121705 is an apocalyptic number.

It is an amenable number.

109950121705 is a deficient number, since it is larger than the sum of its proper divisors (21990024347).

109950121705 is an equidigital number, since it uses as much as digits as its factorization.

109950121705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21990024346.

The product of its (nonzero) digits is 28350, while the sum is 40.

The spelling of 109950121705 in words is "one hundred nine billion, nine hundred fifty million, one hundred twenty-one thousand, seven hundred five".