121360515016321 has 16 divisors (see below), whose sum is σ = 139431241600000. Its totient is φ = 103473912941568.

The previous prime is 121360515016309. The next prime is 121360515016333. The reversal of 121360515016321 is 123610515063121.

It is an interprime number because it is at equal distance from previous prime (121360515016309) and next prime (121360515016333).

It is a cyclic number.

It is not a de Polignac number, because 121360515016321 - 2¹³ = 121360515008129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121360515016361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29173356 + ... + 33072733.

It is an arithmetic number, because the mean of its divisors is an integer number (8714452600000).

Almost surely, 2^{121360515016321} is an apocalyptic number.

It is an amenable number.

121360515016321 is a deficient number, since it is larger than the sum of its proper divisors (18070726583679).

121360515016321 is a wasteful number, since it uses less digits than its factorization.

121360515016321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62247568.

The product of its (nonzero) digits is 32400, while the sum is 37.

The spelling of 121360515016321 in words is "one hundred twenty-one trillion, three hundred sixty billion, five hundred fifteen million, sixteen thousand, three hundred twenty-one".