121194195 has 32 divisors (see below), whose sum is σ = 197517312. Its totient is φ = 63447552.

The previous prime is 121194191. The next prime is 121194197. The reversal of 121194195 is 591491121.

It is not a de Polignac number, because 121194195 - 2² = 121194191 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121194191) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 214984 + ... + 215546.

It is an arithmetic number, because the mean of its divisors is an integer number (6172416).

Almost surely, 2^121194195 is an apocalyptic number.

121194195 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

121194195 is a deficient number, since it is larger than the sum of its proper divisors (76323117).

121194195 is a wasteful number, since it uses less digits than its factorization.

121194195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811.

The product of its digits is 3240, while the sum is 33.

The square root of 121194195 is about 11008.8235066241. The cubic root of 121194195 is about 494.8732049488.

The spelling of 121194195 in words is "one hundred twenty-one million, one hundred ninety-four thousand, one hundred ninety-five".