121444000 has 96 divisors (see below), whose sum is σ = 302427216. Its totient is φ = 47923200.

The previous prime is 121443989. The next prime is 121444013. The reversal of 121444000 is 444121.

It can be written as a sum of positive squares in 8 ways, for example, as 4717584 + 116726416 = 2172^2 + 10804^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 387844 + ... + 388156.

Almost surely, 2^121444000 is an apocalyptic number.

121444000 is a gapful number since it is divisible by the number (10) 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 121444000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151213608).

121444000 is an abundant number, since it is smaller than the sum of its proper divisors (180983216).

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

121444000 is an equidigital number, since it uses as much as digits as its factorization.

121444000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435 (or 417 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 121444000 is about 11020.1633381724. The cubic root of 121444000 is about 495.2129818438.

Adding to 121444000 its reverse (444121), we get a palindrome (121888121).

The spelling of 121444000 in words is "one hundred twenty-one million, four hundred forty-four thousand".