121020133200 has 120 divisors (see below), whose sum is σ = 387781305408. Its totient is φ = 32262589440.

The previous prime is 121020133193. The next prime is 121020133211. The reversal of 121020133200 is 2331020121.

It is a tau number, because it is divible by the number of its divisors (120).

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 121020133200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4718812 + ... + 4744388.

Almost surely, 2^121020133200 is an apocalyptic number.

121020133200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121020133200 is an abundant number, since it is smaller than the sum of its proper divisors (266761172208).

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

121020133200 is a wasteful number, since it uses less digits than its factorization.

121020133200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29541 (or 29530 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 121020133200 its reverse (2331020121), we get a palindrome (123351153321).

The spelling of 121020133200 in words is "one hundred twenty-one billion, twenty million, one hundred thirty-three thousand, two hundred".