121076517771 has 128 divisors (see below), whose sum is σ = 203212800000. Its totient is φ = 70624344960.

The previous prime is 121076517721. The next prime is 121076517799. The reversal of 121076517771 is 177715670121.

121076517771 is a `hidden beast` number, since 121 + 0 + 7 + 6 + 517 + 7 + 7 + 1 = 666.

It is not a de Polignac number, because 121076517771 - 2⁶ = 121076517707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121076517701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 206262940 + ... + 206263526.

It is an arithmetic number, because the mean of its divisors is an integer number (1587600000).

Almost surely, 2^121076517771 is an apocalyptic number.

121076517771 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121076517771 is a deficient number, since it is larger than the sum of its proper divisors (82136282229).

121076517771 is a wasteful number, since it uses less digits than its factorization.

121076517771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894 (or 888 counting only the distinct ones).

The product of its (nonzero) digits is 144060, while the sum is 45.

The spelling of 121076517771 in words is "one hundred twenty-one billion, seventy-six million, five hundred seventeen thousand, seven hundred seventy-one".