1228720339107 has 12 divisors (see below), whose sum is σ = 1785445924080. Its totient is φ = 814241820528.

The previous prime is 1228720339073. The next prime is 1228720339117. The reversal of 1228720339107 is 7019330278221.

1228720339107 is a `hidden beast` number, since 1 + 2 + 287 + 20 + 339 + 10 + 7 = 666.

It is not a de Polignac number, because 1228720339107 - 2⁶ = 1228720339043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1228720339117) 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 11 ways as a sum of consecutive naturals, for example, 408754432 + ... + 408757437.

It is an arithmetic number, because the mean of its divisors is an integer number (148787160340).

Almost surely, 2^{1228720339107} is an apocalyptic number.

1228720339107 is a deficient number, since it is larger than the sum of its proper divisors (556725584973).

1228720339107 is a wasteful number, since it uses less digits than its factorization.

1228720339107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817512042 (or 817512039 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The spelling of 1228720339107 in words is "one trillion, two hundred twenty-eight billion, seven hundred twenty million, three hundred thirty-nine thousand, one hundred seven".