1228801442871 has 16 divisors (see below), whose sum is σ = 1639097044704. Its totient is φ = 818853494784.

The previous prime is 1228801442867. The next prime is 1228801442873. The reversal of 1228801442871 is 1782441088221.

It is not a de Polignac number, because 1228801442871 - 2² = 1228801442867 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1228801442871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228801442873) 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 15 ways as a sum of consecutive naturals, for example, 117549681 + ... + 117560133.

It is an arithmetic number, because the mean of its divisors is an integer number (102443565294).

Almost surely, 2^{1228801442871} is an apocalyptic number.

1228801442871 is a deficient number, since it is larger than the sum of its proper divisors (410295601833).

1228801442871 is a wasteful number, since it uses less digits than its factorization.

1228801442871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23330.

The product of its (nonzero) digits is 458752, while the sum is 48.

The spelling of 1228801442871 in words is "one trillion, two hundred twenty-eight billion, eight hundred one million, four hundred forty-two thousand, eight hundred seventy-one".