851265301121 has 8 divisors (see below), whose sum is σ = 856245020904. Its totient is φ = 846286261120.

The previous prime is 851265301111. The next prime is 851265301181. The reversal of 851265301121 is 121103562158.

It can be written as a sum of positive squares in 4 ways, for example, as 78378161521 + 772887139600 = 279961^2 + 879140^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-851265301121 is a prime.

It is a super-2 number, since 2×851265301121² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (851265301111) 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 7 ways as a sum of consecutive naturals, for example, 2460575 + ... + 2785131.

It is an arithmetic number, because the mean of its divisors is an integer number (107030627613).

Almost surely, 2^851265301121 is an apocalyptic number.

It is an amenable number.

851265301121 is a deficient number, since it is larger than the sum of its proper divisors (4979719783).

851265301121 is a wasteful number, since it uses less digits than its factorization.

851265301121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339891.

The product of its (nonzero) digits is 14400, while the sum is 35.

Adding to 851265301121 its reverse (121103562158), we get a palindrome (972368863279).

The spelling of 851265301121 in words is "eight hundred fifty-one billion, two hundred sixty-five million, three hundred one thousand, one hundred twenty-one".