121413563400 has 192 divisors, whose sum is σ = 393005649600. Its totient is φ = 30967874560.

The previous prime is 121413563399. The next prime is 121413563407. The reversal of 121413563400 is 4365314121.

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

It is not an unprimeable number, because it can be changed into a prime (121413563407) by changing a digit.

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, 1829194 + ... + 1894406.

It is an arithmetic number, because the mean of its divisors is an integer number (2046904425).

Almost surely, 2^121413563400 is an apocalyptic number.

121413563400 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 121413563400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196502824800).

121413563400 is an abundant number, since it is smaller than the sum of its proper divisors (271592086200).

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

121413563400 is a wasteful number, since it uses less digits than its factorization.

121413563400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65368 (or 65359 counting only the distinct ones).

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

Adding to 121413563400 its reverse (4365314121), we get a palindrome (125778877521).

The spelling of 121413563400 in words is "one hundred twenty-one billion, four hundred thirteen million, five hundred sixty-three thousand, four hundred".