127128012231 has 8 divisors (see below), whose sum is σ = 184913472384. Its totient is φ = 77047280120.

The previous prime is 127128012203. The next prime is 127128012281. The reversal of 127128012231 is 132210821721.

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 127128012231 - 2⁵ = 127128012199 is a prime.

It is a super-2 number, since 2×127128012231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127128012281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1926181971 + ... + 1926182036.

It is an arithmetic number, because the mean of its divisors is an integer number (23114184048).

Almost surely, 2^127128012231 is an apocalyptic number.

127128012231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

127128012231 is a deficient number, since it is larger than the sum of its proper divisors (57785460153).

127128012231 is a wasteful number, since it uses less digits than its factorization.

127128012231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3852364021.

The product of its (nonzero) digits is 2688, while the sum is 30.

Adding to 127128012231 its reverse (132210821721), we get a palindrome (259338833952).

The spelling of 127128012231 in words is "one hundred twenty-seven billion, one hundred twenty-eight million, twelve thousand, two hundred thirty-one".