121340422400 has 108 divisors (see below), whose sum is σ = 303956347632. Its totient is φ = 47951185920.

The previous prime is 121340422369. The next prime is 121340422417. The reversal of 121340422400 is 4224043121.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 416987 + ... + 645413.

Almost surely, 2^121340422400 is an apocalyptic number.

121340422400 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 121340422400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151978173816).

121340422400 is an abundant number, since it is smaller than the sum of its proper divisors (182615925232).

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

121340422400 is an equidigital number, since it uses as much as digits as its factorization.

121340422400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228536 (or 228517 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 121340422400 its reverse (4224043121), we get a palindrome (125564465521).

The spelling of 121340422400 in words is "one hundred twenty-one billion, three hundred forty million, four hundred twenty-two thousand, four hundred".