121335100 has 36 divisors (see below), whose sum is σ = 267626968. Its totient is φ = 47736000.

The previous prime is 121335091. The next prime is 121335119. The reversal of 121335100 is 1533121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3846 + ... + 16045.

Almost surely, 2^121335100 is an apocalyptic number.

121335100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121335100 is an abundant number, since it is smaller than the sum of its proper divisors (146291868).

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

121335100 is a wasteful number, since it uses less digits than its factorization.

121335100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19966 (or 19959 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 121335100 is about 11015.2212869284. The cubic root of 121335100 is about 495.0649168339.

Adding to 121335100 its reverse (1533121), we get a palindrome (122868221).

The spelling of 121335100 in words is "one hundred twenty-one million, three hundred thirty-five thousand, one hundred".