121445771347 has 2 divisors, whose sum is σ = 121445771348. Its totient is φ = 121445771346.

The previous prime is 121445771339. The next prime is 121445771353. The reversal of 121445771347 is 743177544121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121445771347 - 2³ = 121445771339 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121445771297 and 121445771306.

It is not a weakly prime, because it can be changed into another prime (121445771327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60722885673 + 60722885674.

It is an arithmetic number, because the mean of its divisors is an integer number (60722885674).

Almost surely, 2^121445771347 is an apocalyptic number.

121445771347 is a deficient number, since it is larger than the sum of its proper divisors (1).

121445771347 is an equidigital number, since it uses as much as digits as its factorization.

121445771347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 658560, while the sum is 46.

The spelling of 121445771347 in words is "one hundred twenty-one billion, four hundred forty-five million, seven hundred seventy-one thousand, three hundred forty-seven".