121103521334400 has 384 divisors, whose sum is σ = 454066413603840. Its totient is φ = 28081975398400.

The previous prime is 121103521334363. The next prime is 121103521334501. The reversal of 121103521334400 is 4433125301121.

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 22501932 + ... + 27359531.

It is an arithmetic number, because the mean of its divisors is an integer number (1182464618760).

Almost surely, 2^{121103521334400} is an apocalyptic number.

121103521334400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121103521334400 is an abundant number, since it is smaller than the sum of its proper divisors (332962892269440).

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

121103521334400 is a wasteful number, since it uses less digits than its factorization.

121103521334400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49861524 (or 49861507 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 121103521334400 its reverse (4433125301121), we get a palindrome (125536646635521).

The spelling of 121103521334400 in words is "one hundred twenty-one trillion, one hundred three billion, five hundred twenty-one million, three hundred thirty-four thousand, four hundred".