121220000196 has 24 divisors (see below), whose sum is σ = 289424497824. Its totient is φ = 39466976640.

The previous prime is 121220000179. The next prime is 121220000263. The reversal of 121220000196 is 691000022121.

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, 117460725 + ... + 117461756.

It is an arithmetic number, because the mean of its divisors is an integer number (12059354076).

Almost surely, 2^121220000196 is an apocalyptic number.

It is an amenable number.

121220000196 is an abundant number, since it is smaller than the sum of its proper divisors (168204497628).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121220000196 is a wasteful number, since it uses less digits than its factorization.

121220000196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234922531 (or 234922529 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

The spelling of 121220000196 in words is "one hundred twenty-one billion, two hundred twenty million, one hundred ninety-six", and thus it is an aban number.