127065721770211 has 4 divisors (see below), whose sum is σ = 145217967737392. Its totient is φ = 108913475803032.

The previous prime is 127065721770109. The next prime is 127065721770223. The reversal of 127065721770211 is 112077127560721.

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

It is a cyclic number.

It is not a de Polignac number, because 127065721770211 - 2⁷ = 127065721770083 is a prime.

It is a super-2 number, since 2×127065721770211² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127065721570211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9076122983580 + ... + 9076122983593.

It is an arithmetic number, because the mean of its divisors is an integer number (36304491934348).

Almost surely, 2^{127065721770211} is an apocalyptic number.

127065721770211 is a deficient number, since it is larger than the sum of its proper divisors (18152245967181).

127065721770211 is an equidigital number, since it uses as much as digits as its factorization.

127065721770211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18152245967180.

The product of its (nonzero) digits is 576240, while the sum is 49.

The spelling of 127065721770211 in words is "one hundred twenty-seven trillion, sixty-five billion, seven hundred twenty-one million, seven hundred seventy thousand, two hundred eleven".