1201117206355 has 16 divisors (see below), whose sum is σ = 1664864064864. Its totient is φ = 822155092480.

The previous prime is 1201117206319. The next prime is 1201117206407. The reversal of 1201117206355 is 5536027111021.

It is not a de Polignac number, because 1201117206355 - 2¹⁷ = 1201117075283 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1201117206355.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 642307732 + ... + 642309601.

It is an arithmetic number, because the mean of its divisors is an integer number (104054004054).

Almost surely, 2^{1201117206355} is an apocalyptic number.

1201117206355 is a deficient number, since it is larger than the sum of its proper divisors (463746858509).

1201117206355 is a wasteful number, since it uses less digits than its factorization.

1201117206355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1284617366.

The product of its (nonzero) digits is 12600, while the sum is 34.

The spelling of 1201117206355 in words is "one trillion, two hundred one billion, one hundred seventeen million, two hundred six thousand, three hundred fifty-five".