121727570775 has 12 divisors (see below), whose sum is σ = 201256250472. Its totient is φ = 64921371040.

The previous prime is 121727570689. The next prime is 121727570813. The reversal of 121727570775 is 577075727121.

It is not a de Polignac number, because 121727570775 - 2¹⁷ = 121727439703 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 811517064 + ... + 811517213.

It is an arithmetic number, because the mean of its divisors is an integer number (16771354206).

Almost surely, 2^121727570775 is an apocalyptic number.

121727570775 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

121727570775 is a deficient number, since it is larger than the sum of its proper divisors (79528679697).

121727570775 is a wasteful number, since it uses less digits than its factorization.

121727570775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1623034290 (or 1623034285 counting only the distinct ones).

The product of its (nonzero) digits is 1680700, while the sum is 51.

The spelling of 121727570775 in words is "one hundred twenty-one billion, seven hundred twenty-seven million, five hundred seventy thousand, seven hundred seventy-five".