121617267016 has 32 divisors (see below), whose sum is σ = 260910512640. Its totient is φ = 52061269248.

The previous prime is 121617266989. The next prime is 121617267017. The reversal of 121617267016 is 610762716121.

It is a self number, because there is not a number n which added to its sum of digits gives 121617267016.

It is not an unprimeable number, because it can be changed into a prime (121617267017) 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, 1209921 + ... + 1306576.

It is an arithmetic number, because the mean of its divisors is an integer number (8153453520).

Almost surely, 2^121617267016 is an apocalyptic number.

It is an amenable number.

121617267016 is an abundant number, since it is smaller than the sum of its proper divisors (139293245624).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121617267016 is a wasteful number, since it uses less digits than its factorization.

121617267016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2517373 (or 2517369 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 40.

The spelling of 121617267016 in words is "one hundred twenty-one billion, six hundred seventeen million, two hundred sixty-seven thousand, sixteen".