121160661710565 has 64 divisors (see below), whose sum is σ = 204182563875840. Its totient is φ = 61181277696000.

The previous prime is 121160661710533. The next prime is 121160661710567. The reversal of 121160661710565 is 565017166061121.

It is not a de Polignac number, because 121160661710565 - 2⁵ = 121160661710533 is a prime.

It is a super-2 number, since 2×121160661710565² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121160661710567) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5048138565 + ... + 5048162565.

It is an arithmetic number, because the mean of its divisors is an integer number (3190352560560).

Almost surely, 2^{121160661710565} is an apocalyptic number.

121160661710565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121160661710565 is a deficient number, since it is larger than the sum of its proper divisors (83021902165275).

121160661710565 is a wasteful number, since it uses less digits than its factorization.

121160661710565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33922.

The product of its (nonzero) digits is 453600, while the sum is 48.

The spelling of 121160661710565 in words is "one hundred twenty-one trillion, one hundred sixty billion, six hundred sixty-one million, seven hundred ten thousand, five hundred sixty-five".