121210112100194 has 48 divisors (see below), whose sum is σ = 198756225043200. Its totient is φ = 55409457025728.

The previous prime is 121210112100191. The next prime is 121210112100239. The reversal of 121210112100194 is 491001211012121.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (121210112100191) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 99568397 + ... + 100778399.

It is an arithmetic number, because the mean of its divisors is an integer number (4140754688400).

Almost surely, 2^{121210112100194} is an apocalyptic number.

121210112100194 is a deficient number, since it is larger than the sum of its proper divisors (77546112943006).

121210112100194 is a wasteful number, since it uses less digits than its factorization.

121210112100194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1212859 (or 1212846 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 26.

The spelling of 121210112100194 in words is "one hundred twenty-one trillion, two hundred ten billion, one hundred twelve million, one hundred thousand, one hundred ninety-four".