121253233534400 has 84 divisors (see below), whose sum is σ = 325482259427880. Its totient is φ = 44092084915200.

The previous prime is 121253233534393. The next prime is 121253233534403. The reversal of 121253233534400 is 4435332352121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121253233534403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3444676535 + ... + 3444711734.

Almost surely, 2^{121253233534400} is an apocalyptic number.

121253233534400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121253233534400 is an abundant number, since it is smaller than the sum of its proper divisors (204229025893480).

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

121253233534400 is a wasteful number, since it uses less digits than its factorization.

121253233534400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6889388302 (or 6889388287 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 38.

Adding to 121253233534400 its reverse (4435332352121), we get a palindrome (125688565886521).

The spelling of 121253233534400 in words is "one hundred twenty-one trillion, two hundred fifty-three billion, two hundred thirty-three million, five hundred thirty-four thousand, four hundred".