121313241240400 has 120 divisors (see below), whose sum is σ = 321099007464288. Its totient is φ = 43677134400000.

The previous prime is 121313241240341. The next prime is 121313241240439. The reversal of 121313241240400 is 4042142313121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 136046646 + ... + 136935445.

Almost surely, 2^{121313241240400} is an apocalyptic number.

121313241240400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121313241240400 is an abundant number, since it is smaller than the sum of its proper divisors (199785766223888).

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

121313241240400 is a wasteful number, since it uses less digits than its factorization.

121313241240400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272982221 (or 272982210 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 121313241240400 its reverse (4042142313121), we get a palindrome (125355383553521).

The spelling of 121313241240400 in words is "one hundred twenty-one trillion, three hundred thirteen billion, two hundred forty-one million, two hundred forty thousand, four hundred".