121169448 has 96 divisors (see below), whose sum is σ = 338518440. Its totient is φ = 39137280.

The previous prime is 121169429. The next prime is 121169449. The reversal of 121169448 is 844961121.

It can be written as a sum of positive squares in 4 ways, for example, as 91814724 + 29354724 = 9582^2 + 5418^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

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

It is not an unprimeable number, because it can be changed into a prime (121169449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 431068 + ... + 431348.

Almost surely, 2^121169448 is an apocalyptic number.

121169448 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121169448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169259220).

121169448 is an abundant number, since it is smaller than the sum of its proper divisors (217348992).

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

121169448 is a wasteful number, since it uses less digits than its factorization.

121169448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459 (or 452 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 121169448 is about 11007.6994871771. The cubic root of 121169448 is about 494.8395194496.

The spelling of 121169448 in words is "one hundred twenty-one million, one hundred sixty-nine thousand, four hundred forty-eight".