121623323400 has 72 divisors (see below), whose sum is σ = 408451667130. Its totient is φ = 32432885760.

The previous prime is 121623323389. The next prime is 121623323417. The reversal of 121623323400 is 4323326121.

121623323400 is a `hidden beast` number, since 1 + 2 + 1 + 6 + 233 + 23 + 400 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 113853606084 + 7769717316 = 337422^2 + 88146^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 33782457 + ... + 33786056.

Almost surely, 2^121623323400 is an apocalyptic number.

121623323400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121623323400 is an abundant number, since it is smaller than the sum of its proper divisors (286828343730).

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

121623323400 is a wasteful number, since it uses less digits than its factorization.

121623323400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67568535 (or 67568523 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 121623323400 its reverse (4323326121), we get a palindrome (125946649521).

The spelling of 121623323400 in words is "one hundred twenty-one billion, six hundred twenty-three million, three hundred twenty-three thousand, four hundred".