121353510052165 has 8 divisors (see below), whose sum is σ = 145637114071680. Its totient is φ = 97074206702352.

The previous prime is 121353510052147. The next prime is 121353510052171. The reversal of 121353510052165 is 561250015353121.

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 121353510052165 - 2⁵ = 121353510052133 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1075105345 + ... + 1075218214.

It is an arithmetic number, because the mean of its divisors is an integer number (18204639258960).

Almost surely, 2^{121353510052165} is an apocalyptic number.

It is an amenable number.

121353510052165 is a deficient number, since it is larger than the sum of its proper divisors (24283604019515).

121353510052165 is a wasteful number, since it uses less digits than its factorization.

121353510052165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2150334851.

The product of its (nonzero) digits is 135000, while the sum is 40.

The spelling of 121353510052165 in words is "one hundred twenty-one trillion, three hundred fifty-three billion, five hundred ten million, fifty-two thousand, one hundred sixty-five".