121205560105 has 8 divisors (see below), whose sum is σ = 166224768192. Its totient is φ = 83112384048.

The previous prime is 121205560081. The next prime is 121205560111. The reversal of 121205560105 is 501065502121.

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 121205560105 - 2⁹ = 121205559593 is a prime.

It is a super-2 number, since 2×121205560105² (a number of 23 digits) contains 22 as substring.

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, 1731507967 + ... + 1731508036.

It is an arithmetic number, because the mean of its divisors is an integer number (20778096024).

Almost surely, 2^121205560105 is an apocalyptic number.

It is an amenable number.

121205560105 is a deficient number, since it is larger than the sum of its proper divisors (45019208087).

121205560105 is an equidigital number, since it uses as much as digits as its factorization.

121205560105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3463016015.

The product of its (nonzero) digits is 3000, while the sum is 28.

The spelling of 121205560105 in words is "one hundred twenty-one billion, two hundred five million, five hundred sixty thousand, one hundred five".