121021012110200 has 96 divisors (see below), whose sum is σ = 286604234160960. Its totient is φ = 47511982425600.

The previous prime is 121021012110179. The next prime is 121021012110203. The reversal of 121021012110200 is 2011210120121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121021012110203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5063879 + ... + 16361078.

It is an arithmetic number, because the mean of its divisors is an integer number (2985460772510).

Almost surely, 2^{121021012110200} is an apocalyptic number.

121021012110200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121021012110200 is an abundant number, since it is smaller than the sum of its proper divisors (165583222050760).

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

121021012110200 is a wasteful number, since it uses less digits than its factorization.

121021012110200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21425497 (or 21425488 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121021012110200 its reverse (2011210120121), we get a palindrome (123032222230321).

The spelling of 121021012110200 in words is "one hundred twenty-one trillion, twenty-one billion, twelve million, one hundred ten thousand, two hundred".