121803606 has 48 divisors (see below), whose sum is σ = 285961104. Its totient is φ = 37320192.

The previous prime is 121803601. The next prime is 121803659. The reversal of 121803606 is 606308121.

It is a super-2 number, since 2×121803606² = 29672236869206472, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121803606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121803601) 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, 8530 + ... + 17786.

It is an arithmetic number, because the mean of its divisors is an integer number (5957523).

Almost surely, 2^121803606 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121803606, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142980552).

121803606 is an abundant number, since it is smaller than the sum of its proper divisors (164157498).

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

121803606 is a wasteful number, since it uses less digits than its factorization.

121803606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9325 (or 9322 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 121803606 is about 11036.4670977628. The cubic root of 121803606 is about 495.7012894221.

The spelling of 121803606 in words is "one hundred twenty-one million, eight hundred three thousand, six hundred six".