121441650 has 72 divisors (see below), whose sum is σ = 331093392. Its totient is φ = 29436000.

The previous prime is 121441643. The next prime is 121441651. The reversal of 121441650 is 56144121.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 121441650.

It is not an unprimeable number, because it can be changed into a prime (121441651) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 14805 + ... + 21495.

Almost surely, 2^121441650 is an apocalyptic number.

121441650 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 121441650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165546696).

121441650 is an abundant number, since it is smaller than the sum of its proper divisors (209651742).

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

121441650 is a wasteful number, since it uses less digits than its factorization.

121441650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6728 (or 6712 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 121441650 is about 11020.0567149176. The cubic root of 121441650 is about 495.2097876199.

Adding to 121441650 its reverse (56144121), we get a palindrome (177585771).

The spelling of 121441650 in words is "one hundred twenty-one million, four hundred forty-one thousand, six hundred fifty".