121122450 has 144 divisors (see below), whose sum is σ = 350977536. Its totient is φ = 29836800.

The previous prime is 121122413. The next prime is 121122493. The reversal of 121122450 is 54221121.

121122450 is a `hidden beast` number, since 1 + 211 + 2 + 2 + 450 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 71 ways as a sum of consecutive naturals, for example, 543039 + ... + 543261.

It is an arithmetic number, because the mean of its divisors is an integer number (2437344).

Almost surely, 2^121122450 is an apocalyptic number.

121122450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 121122450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175488768).

121122450 is an abundant number, since it is smaller than the sum of its proper divisors (229855086).

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

121122450 is a wasteful number, since it uses less digits than its factorization.

121122450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329 (or 321 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 121122450 is about 11005.5645016510. The cubic root of 121122450 is about 494.7755333662.

Adding to 121122450 its reverse (54221121), we get a palindrome (175343571).

The spelling of 121122450 in words is "one hundred twenty-one million, one hundred twenty-two thousand, four hundred fifty".