121100003200 has 384 divisors, whose sum is σ = 348018573600. Its totient is φ = 41150054400.

The previous prime is 121100003153. The next prime is 121100003221. The reversal of 121100003200 is 2300001121.

It is a Harshad number since it is a multiple of its sum of digits (10).

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 47 ways as a sum of consecutive naturals, for example, 93948156 + ... + 93949444.

Almost surely, 2^121100003200 is an apocalyptic number.

121100003200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121100003200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174009286800).

121100003200 is an abundant number, since it is smaller than the sum of its proper divisors (226918570400).

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

121100003200 is a wasteful number, since it uses less digits than its factorization.

121100003200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1498 (or 1481 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 121100003200 its reverse (2300001121), we get a palindrome (123400004321).

The spelling of 121100003200 in words is "one hundred twenty-one billion, one hundred million, three thousand, two hundred".