121354242400 has 72 divisors (see below), whose sum is σ = 296333924040. Its totient is φ = 48528936960.

The previous prime is 121354242389. The next prime is 121354242403. The reversal of 121354242400 is 4242453121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121354242403) 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, 3389392 + ... + 3425008.

It is an arithmetic number, because the mean of its divisors is an integer number (4115748945).

Almost surely, 2^121354242400 is an apocalyptic number.

121354242400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121354242400 is an abundant number, since it is smaller than the sum of its proper divisors (174979681640).

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

121354242400 is a wasteful number, since it uses less digits than its factorization.

121354242400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39896 (or 39883 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 121354242400 its reverse (4242453121), we get a palindrome (125596695521).

The spelling of 121354242400 in words is "one hundred twenty-one billion, three hundred fifty-four million, two hundred forty-two thousand, four hundred".