121288687511039 has 4 divisors (see below), whose sum is σ = 121301265420456. Its totient is φ = 121276109601624.

The previous prime is 121288687511011. The next prime is 121288687511071. The reversal of 121288687511039 is 930115786882121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121288687511039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121288687511009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6288940244 + ... + 6288959529.

It is an arithmetic number, because the mean of its divisors is an integer number (30325316355114).

Almost surely, 2^{121288687511039} is an apocalyptic number.

121288687511039 is a deficient number, since it is larger than the sum of its proper divisors (12577909417).

121288687511039 is an equidigital number, since it uses as much as digits as its factorization.

121288687511039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12577909416.

The product of its (nonzero) digits is 11612160, while the sum is 62.

The spelling of 121288687511039 in words is "one hundred twenty-one trillion, two hundred eighty-eight billion, six hundred eighty-seven million, five hundred eleven thousand, thirty-nine".