121115600105 has 8 divisors (see below), whose sum is σ = 153888056712. Its totient is φ = 91192922368.

The previous prime is 121115599949. The next prime is 121115600113. The reversal of 121115600105 is 501006511121.

It can be written as a sum of positive squares in 4 ways, for example, as 2374710361 + 118740889744 = 48731^2 + 344588^2 .

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 121115600105 - 2¹⁰ = 121115599081 is a prime.

It is a super-2 number, since 2×121115600105² (a number of 23 digits) contains 22 as substring.

It is a Duffinian 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, 712444622 + ... + 712444791.

It is an arithmetic number, because the mean of its divisors is an integer number (19236007089).

Almost surely, 2^121115600105 is an apocalyptic number.

It is an amenable number.

121115600105 is a deficient number, since it is larger than the sum of its proper divisors (32772456607).

121115600105 is a wasteful number, since it uses less digits than its factorization.

121115600105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1424889435.

The product of its (nonzero) digits is 300, while the sum is 23.

The spelling of 121115600105 in words is "one hundred twenty-one billion, one hundred fifteen million, six hundred thousand, one hundred five".