121331196 has 120 divisors (see below), whose sum is σ = 368858336. Its totient is φ = 34058880.

The previous prime is 121331191. The next prime is 121331213. The reversal of 121331196 is 691133121.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121331191) by changing a digit.

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 39 ways as a sum of consecutive naturals, for example, 137910 + ... + 138786.

Almost surely, 2^121331196 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121331196, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184429168).

121331196 is an abundant number, since it is smaller than the sum of its proper divisors (247527140).

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

121331196 is a wasteful number, since it uses less digits than its factorization.

121331196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961 (or 950 counting only the distinct ones).

The product of its digits is 972, while the sum is 27.

The square root of 121331196 is about 11015.0440761715. The cubic root of 121331196 is about 495.0596071470.

The spelling of 121331196 in words is "one hundred twenty-one million, three hundred thirty-one thousand, one hundred ninety-six".