121356088313400 has 1728 divisors, whose sum is σ = 468405093012480. Its totient is φ = 28079570534400.

The previous prime is 121356088313389. The next prime is 121356088313459. The reversal of 121356088313400 is 4313880653121.

It is a happy number.

121356088313400 is a `hidden beast` number, since 1 + 2 + 1 + 3 + 5 + 608 + 8 + 3 + 1 + 34 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 431 ways as a sum of consecutive naturals, for example, 37676523790 + ... + 37676527010.

It is an arithmetic number, because the mean of its divisors is an integer number (271067762160).

Almost surely, 2^{121356088313400} is an apocalyptic number.

121356088313400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121356088313400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (234202546506240).

121356088313400 is an abundant number, since it is smaller than the sum of its proper divisors (347049004699080).

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

121356088313400 is a wasteful number, since it uses less digits than its factorization.

121356088313400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3414 (or 3385 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The spelling of 121356088313400 in words is "one hundred twenty-one trillion, three hundred fifty-six billion, eighty-eight million, three hundred thirteen thousand, four hundred".