121003800 has 48 divisors (see below), whose sum is σ = 375113640. Its totient is φ = 32267520.

The previous prime is 121003793. The next prime is 121003853. The reversal of 121003800 is 8300121.

It is a happy number.

It is a super-2 number, since 2×121003800² = 29283839228880000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 121003800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 100237 + ... + 101436.

Almost surely, 2^121003800 is an apocalyptic number.

121003800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121003800 is an abundant number, since it is smaller than the sum of its proper divisors (254109840).

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

121003800 is a wasteful number, since it uses less digits than its factorization.

121003800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201692 (or 201683 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 121003800 is about 11000.1727259166. The cubic root of 121003800 is about 494.6139219931.

Adding to 121003800 its reverse (8300121), we get a palindrome (129303921).

The spelling of 121003800 in words is "one hundred twenty-one million, three thousand, eight hundred".