121626272400 has 120 divisors (see below), whose sum is σ = 406549128000. Its totient is φ = 31023505920.

The previous prime is 121626272389. The next prime is 121626272429. The reversal of 121626272400 is 4272626121.

It is a tau number, because it is divible by the number of its divisors (120).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2175775 + ... + 2230974.

It is an arithmetic number, because the mean of its divisors is an integer number (3387909400).

Almost surely, 2^121626272400 is an apocalyptic number.

121626272400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121626272400 is an abundant number, since it is smaller than the sum of its proper divisors (284922855600).

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

121626272400 is a wasteful number, since it uses less digits than its factorization.

121626272400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4406793 (or 4406782 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

Adding to 121626272400 its reverse (4272626121), we get a palindrome (125898898521).

The spelling of 121626272400 in words is "one hundred twenty-one billion, six hundred twenty-six million, two hundred seventy-two thousand, four hundred".