121103332400 has 120 divisors (see below), whose sum is σ = 309706851600. Its totient is φ = 45375897600.

The previous prime is 121103332387. The next prime is 121103332421. The reversal of 121103332400 is 4233301121.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 586880 + ... + 765920.

It is an arithmetic number, because the mean of its divisors is an integer number (2580890430).

Almost surely, 2^121103332400 is an apocalyptic number.

121103332400 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 121103332400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154853425800).

121103332400 is an abundant number, since it is smaller than the sum of its proper divisors (188603519200).

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

121103332400 is a wasteful number, since it uses less digits than its factorization.

121103332400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179167 (or 179156 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 121103332400 its reverse (4233301121), we get a palindrome (125336633521).

The spelling of 121103332400 in words is "one hundred twenty-one billion, one hundred three million, three hundred thirty-two thousand, four hundred".