121340224400 has 60 divisors (see below), whose sum is σ = 306863060400. Its totient is φ = 45981555840.

The previous prime is 121340224399. The next prime is 121340224433. The reversal of 121340224400 is 4422043121.

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, 7975310 + ... + 7990509.

It is an arithmetic number, because the mean of its divisors is an integer number (5114384340).

Almost surely, 2^121340224400 is an apocalyptic number.

121340224400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121340224400 is an abundant number, since it is smaller than the sum of its proper divisors (185522836000).

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

121340224400 is a wasteful number, since it uses less digits than its factorization.

121340224400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15965856 (or 15965845 counting only the distinct ones).

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

Adding to 121340224400 its reverse (4422043121), we get a palindrome (125762267521).

The spelling of 121340224400 in words is "one hundred twenty-one billion, three hundred forty million, two hundred twenty-four thousand, four hundred".