121246200049 has 4 divisors (see below), whose sum is σ = 130572830836. Its totient is φ = 111919569264.

The previous prime is 121246200043. The next prime is 121246200083. The reversal of 121246200049 is 940002642121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 940002642121 = 193979 ⋅4845899.

It can be written as a sum of positive squares in 2 ways, for example, as 75972999424 + 45273200625 = 275632^2 + 212775^2 .

It is a cyclic number.

It is not a de Polignac number, because 121246200049 - 2³ = 121246200041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121246200041) 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 in 3 ways as a sum of consecutive naturals, for example, 4663315374 + ... + 4663315399.

It is an arithmetic number, because the mean of its divisors is an integer number (32643207709).

Almost surely, 2^121246200049 is an apocalyptic number.

It is an amenable number.

121246200049 is a deficient number, since it is larger than the sum of its proper divisors (9326630787).

121246200049 is an equidigital number, since it uses as much as digits as its factorization.

121246200049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9326630786.

The product of its (nonzero) digits is 6912, while the sum is 31.

The spelling of 121246200049 in words is "one hundred twenty-one billion, two hundred forty-six million, two hundred thousand, forty-nine".