121575311147400 has 384 divisors, whose sum is σ = 432556643352960. Its totient is φ = 27976817664000.

The previous prime is 121575311147333. The next prime is 121575311147413. The reversal of 121575311147400 is 4741113575121.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3940842 + ... + 16083558.

It is an arithmetic number, because the mean of its divisors is an integer number (1126449592065).

Almost surely, 2^{121575311147400} is an apocalyptic number.

121575311147400 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 121575311147400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216278321676480).

121575311147400 is an abundant number, since it is smaller than the sum of its proper divisors (310981332205560).

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

121575311147400 is a wasteful number, since it uses less digits than its factorization.

121575311147400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12142825 (or 12142816 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 42.

The spelling of 121575311147400 in words is "one hundred twenty-one trillion, five hundred seventy-five billion, three hundred eleven million, one hundred forty-seven thousand, four hundred".