121314004400 has 120 divisors (see below), whose sum is σ = 306977919120. Its totient is φ = 45944478720.

The previous prime is 121314004333. The next prime is 121314004423. The reversal of 121314004400 is 4400413121.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16815194 + ... + 16822406.

It is an arithmetic number, because the mean of its divisors is an integer number (2558149326).

Almost surely, 2^121314004400 is an apocalyptic number.

121314004400 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 121314004400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153488959560).

121314004400 is an abundant number, since it is smaller than the sum of its proper divisors (185663914720).

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

121314004400 is a wasteful number, since it uses less digits than its factorization.

121314004400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9463 (or 9452 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 121314004400 its reverse (4400413121), we get a palindrome (125714417521).

The spelling of 121314004400 in words is "one hundred twenty-one billion, three hundred fourteen million, four thousand, four hundred".