121798953395 has 32 divisors (see below), whose sum is σ = 167437670400. Its totient is φ = 83319981696.

The previous prime is 121798953383. The next prime is 121798953413. The reversal of 121798953395 is 593359897121.

It is not a de Polignac number, because 121798953395 - 2¹⁰ = 121798952371 is a prime.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 52748501 + ... + 52750809.

It is an arithmetic number, because the mean of its divisors is an integer number (5232427200).

Almost surely, 2^121798953395 is an apocalyptic number.

121798953395 is a deficient number, since it is larger than the sum of its proper divisors (45638717005).

121798953395 is a wasteful number, since it uses less digits than its factorization.

121798953395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5267.

The product of its digits is 18370800, while the sum is 62.

The spelling of 121798953395 in words is "one hundred twenty-one billion, seven hundred ninety-eight million, nine hundred fifty-three thousand, three hundred ninety-five".