121000050 has 72 divisors (see below), whose sum is σ = 344231316. Its totient is φ = 30366720.

The previous prime is 121000049. The next prime is 121000123. The reversal of 121000050 is 50000121.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 87441201 + 33558849 = 9351^2 + 5793^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 120999996 and 121000041.

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 35 ways as a sum of consecutive naturals, for example, 259 + ... + 15558.

Almost surely, 2^121000050 is an apocalyptic number.

121000050 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 121000050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172115658).

121000050 is an abundant number, since it is smaller than the sum of its proper divisors (223231266).

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

121000050 is a wasteful number, since it uses less digits than its factorization.

121000050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15852 (or 15844 counting only the distinct ones).

The product of its (nonzero) digits is 10, while the sum is 9.

The square root of 121000050 is about 11000.0022727270. The cubic root of 121000050 is about 494.6088124528.

Adding to 121000050 its reverse (50000121), we get a palindrome (171000171).

The spelling of 121000050 in words is "one hundred twenty-one million, fifty", and thus it is an aban number.