10172065121 has 4 divisors (see below), whose sum is σ = 10363990932. Its totient is φ = 9980139312.

The previous prime is 10172065117. The next prime is 10172065129. The reversal of 10172065121 is 12156027101.

10172065121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12156027101 = 37 ⋅328541273.

It can be written as a sum of positive squares in 2 ways, for example, as 3364000000 + 6808065121 = 58000^2 + 82511^2 .

It is a cyclic number.

It is not a de Polignac number, because 10172065121 - 2² = 10172065117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10172065129) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 95962826 + ... + 95962931.

It is an arithmetic number, because the mean of its divisors is an integer number (2590997733).

Almost surely, 2^10172065121 is an apocalyptic number.

It is an amenable number.

10172065121 is a deficient number, since it is larger than the sum of its proper divisors (191925811).

10172065121 is an equidigital number, since it uses as much as digits as its factorization.

10172065121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191925810.

The product of its (nonzero) digits is 840, while the sum is 26.

The spelling of 10172065121 in words is "ten billion, one hundred seventy-two million, sixty-five thousand, one hundred twenty-one".