121345414444400 has 30 divisors (see below), whose sum is σ = 291532358203632. Its totient is φ = 48538165777600.

The previous prime is 121345414444363. The next prime is 121345414444403. The reversal of 121345414444400 is 4444414543121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121345414444403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 151681767656 + ... + 151681768455.

Almost surely, 2^{121345414444400} is an apocalyptic number.

121345414444400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121345414444400 is an abundant number, since it is smaller than the sum of its proper divisors (170186943759232).

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

121345414444400 is a wasteful number, since it uses less digits than its factorization.

121345414444400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303363536129 (or 303363536118 counting only the distinct ones).

The product of its (nonzero) digits is 491520, while the sum is 41.

Adding to 121345414444400 its reverse (4444414543121), we get a palindrome (125789828987521).

The spelling of 121345414444400 in words is "one hundred twenty-one trillion, three hundred forty-five billion, four hundred fourteen million, four hundred forty-four thousand, four hundred".