121755443311 has 2 divisors, whose sum is σ = 121755443312. Its totient is φ = 121755443310.

The previous prime is 121755443263. The next prime is 121755443353. The reversal of 121755443311 is 113344557121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121755443311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121755453311) 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 as a sum of consecutive naturals, namely, 60877721655 + 60877721656.

It is an arithmetic number, because the mean of its divisors is an integer number (60877721656).

Almost surely, 2^121755443311 is an apocalyptic number.

121755443311 is a deficient number, since it is larger than the sum of its proper divisors (1).

121755443311 is an equidigital number, since it uses as much as digits as its factorization.

121755443311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 50400, while the sum is 37.

The spelling of 121755443311 in words is "one hundred twenty-one billion, seven hundred fifty-five million, four hundred forty-three thousand, three hundred eleven".