121155061751 has 2 divisors, whose sum is σ = 121155061752. Its totient is φ = 121155061750.

The previous prime is 121155061723. The next prime is 121155061759. The reversal of 121155061751 is 157160551121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121155061751 - 2¹⁴ = 121155045367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121155061759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60577530875 + 60577530876.

It is an arithmetic number, because the mean of its divisors is an integer number (60577530876).

Almost surely, 2^121155061751 is an apocalyptic number.

121155061751 is a deficient number, since it is larger than the sum of its proper divisors (1).

121155061751 is an equidigital number, since it uses as much as digits as its factorization.

121155061751 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10500, while the sum is 35.

The spelling of 121155061751 in words is "one hundred twenty-one billion, one hundred fifty-five million, sixty-one thousand, seven hundred fifty-one".