121773449401 has 2 divisors, whose sum is σ = 121773449402. Its totient is φ = 121773449400.

The previous prime is 121773449353. The next prime is 121773449429. The reversal of 121773449401 is 104944377121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120114923776 + 1658525625 = 346576^2 + 40725^2 .

It is a cyclic number.

It is not a de Polignac number, because 121773449401 - 2⁹ = 121773448889 is a prime.

It is not a weakly prime, because it can be changed into another prime (121773449491) 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, 60886724700 + 60886724701.

It is an arithmetic number, because the mean of its divisors is an integer number (60886724701).

Almost surely, 2^121773449401 is an apocalyptic number.

It is an amenable number.

121773449401 is a deficient number, since it is larger than the sum of its proper divisors (1).

121773449401 is an equidigital number, since it uses as much as digits as its factorization.

121773449401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 169344, while the sum is 43.

The spelling of 121773449401 in words is "one hundred twenty-one billion, seven hundred seventy-three million, four hundred forty-nine thousand, four hundred one".