121560177097 has 2 divisors, whose sum is σ = 121560177098. Its totient is φ = 121560177096.

The previous prime is 121560177017. The next prime is 121560177103. The reversal of 121560177097 is 790771065121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104086245376 + 17473931721 = 322624^2 + 132189^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121560177097 is a prime.

It is not a weakly prime, because it can be changed into another prime (121560177017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60780088548 + 60780088549.

It is an arithmetic number, because the mean of its divisors is an integer number (60780088549).

Almost surely, 2^121560177097 is an apocalyptic number.

It is an amenable number.

121560177097 is a deficient number, since it is larger than the sum of its proper divisors (1).

121560177097 is an equidigital number, since it uses as much as digits as its factorization.

121560177097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 185220, while the sum is 46.

The spelling of 121560177097 in words is "one hundred twenty-one billion, five hundred sixty million, one hundred seventy-seven thousand, ninety-seven".