121525452000 has 288 divisors, whose sum is σ = 456666354144. Its totient is φ = 30500352000.

The previous prime is 121525451989. The next prime is 121525452007. The reversal of 121525452000 is 254525121.

It is a tau number, because it is divible by the number of its divisors (288).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121525452007) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 512715 + ... + 711285.

It is an arithmetic number, because the mean of its divisors is an integer number (1585647063).

Almost surely, 2^121525452000 is an apocalyptic number.

121525452000 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 121525452000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228333177072).

121525452000 is an abundant number, since it is smaller than the sum of its proper divisors (335140902144).

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

121525452000 is a wasteful number, since it uses less digits than its factorization.

121525452000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198619 (or 198598 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

Adding to 121525452000 its reverse (254525121), we get a palindrome (121779977121).

The spelling of 121525452000 in words is "one hundred twenty-one billion, five hundred twenty-five million, four hundred fifty-two thousand".