121071442217 has 32 divisors (see below), whose sum is σ = 138285757440. Its totient is φ = 105021766080.

The previous prime is 121071442213. The next prime is 121071442229. The reversal of 121071442217 is 712244170121.

It is not a de Polignac number, because 121071442217 - 2² = 121071442213 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121071442213) 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 31 ways as a sum of consecutive naturals, for example, 6180284 + ... + 6199842.

It is an arithmetic number, because the mean of its divisors is an integer number (4321429920).

Almost surely, 2^121071442217 is an apocalyptic number.

It is an amenable number.

121071442217 is a deficient number, since it is larger than the sum of its proper divisors (17214315223).

121071442217 is a wasteful number, since it uses less digits than its factorization.

121071442217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19901.

The product of its (nonzero) digits is 6272, while the sum is 32.

The spelling of 121071442217 in words is "one hundred twenty-one billion, seventy-one million, four hundred forty-two thousand, two hundred seventeen".