121616217007 has 8 divisors (see below), whose sum is σ = 127816859520. Its totient is φ = 115491656280.

The previous prime is 121616216987. The next prime is 121616217067. The reversal of 121616217007 is 700712616121.

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

It is a de Polignac number, because none of the positive numbers 2^k-121616217007 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 (121616217067) 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 7 ways as a sum of consecutive naturals, for example, 19017169 + ... + 19023562.

It is an arithmetic number, because the mean of its divisors is an integer number (15977107440).

Almost surely, 2^121616217007 is an apocalyptic number.

121616217007 is a deficient number, since it is larger than the sum of its proper divisors (6200642513).

121616217007 is a wasteful number, since it uses less digits than its factorization.

121616217007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38040893.

The product of its (nonzero) digits is 7056, while the sum is 34.

The spelling of 121616217007 in words is "one hundred twenty-one billion, six hundred sixteen million, two hundred seventeen thousand, seven".