121420776017 has 8 divisors (see below), whose sum is σ = 122066553000. Its totient is φ = 120776701824.

The previous prime is 121420775999. The next prime is 121420776053. The reversal of 121420776017 is 710677024121.

It can be written as a sum of positive squares in 4 ways, for example, as 77523821761 + 43896954256 = 278431^2 + 209516^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121420776017 - 2⁶ = 121420775953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121420779017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 282578 + ... + 568059.

It is an arithmetic number, because the mean of its divisors is an integer number (15258319125).

Almost surely, 2^121420776017 is an apocalyptic number.

It is an amenable number.

121420776017 is a deficient number, since it is larger than the sum of its proper divisors (645776983).

121420776017 is an equidigital number, since it uses as much as digits as its factorization.

121420776017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851395.

The product of its (nonzero) digits is 32928, while the sum is 38.

The spelling of 121420776017 in words is "one hundred twenty-one billion, four hundred twenty million, seven hundred seventy-six thousand, seventeen".