127218218401 has 8 divisors (see below), whose sum is σ = 132761784960. Its totient is φ = 121675680192.

The previous prime is 127218218389. The next prime is 127218218441. The reversal of 127218218401 is 104812812721.

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-127218218401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (127218218441) 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 7 ways as a sum of consecutive naturals, for example, 1260 + ... + 504418.

It is an arithmetic number, because the mean of its divisors is an integer number (16595223120).

Almost surely, 2^127218218401 is an apocalyptic number.

It is an amenable number.

127218218401 is a deficient number, since it is larger than the sum of its proper divisors (5543566559).

127218218401 is a wasteful number, since it uses less digits than its factorization.

127218218401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514175.

The product of its (nonzero) digits is 14336, while the sum is 37.

The spelling of 127218218401 in words is "one hundred twenty-seven billion, two hundred eighteen million, two hundred eighteen thousand, four hundred one".