121212109298 has 16 divisors (see below), whose sum is σ = 213408193344. Its totient is φ = 50544045360.

The previous prime is 121212109279. The next prime is 121212109313. The reversal of 121212109298 is 892901212121.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 116999588 + ... + 117000623.

It is an arithmetic number, because the mean of its divisors is an integer number (13338012084).

Almost surely, 2^121212109298 is an apocalyptic number.

121212109298 is a deficient number, since it is larger than the sum of its proper divisors (92196084046).

121212109298 is a wasteful number, since it uses less digits than its factorization.

121212109298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234000257.

The product of its (nonzero) digits is 10368, while the sum is 38.

The spelling of 121212109298 in words is "one hundred twenty-one billion, two hundred twelve million, one hundred nine thousand, two hundred ninety-eight".