121353532000 has 192 divisors, whose sum is σ = 314464550400. Its totient is φ = 45897868800.

The previous prime is 121353531989. The next prime is 121353532033. The reversal of 121353532000 is 235353121.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 50082789 + ... + 50085211.

It is an arithmetic number, because the mean of its divisors is an integer number (1637836200).

Almost surely, 2^121353532000 is an apocalyptic number.

121353532000 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 121353532000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157232275200).

121353532000 is an abundant number, since it is smaller than the sum of its proper divisors (193111018400).

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

121353532000 is a wasteful number, since it uses less digits than its factorization.

121353532000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3126 (or 3108 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 25.

Adding to 121353532000 its reverse (235353121), we get a palindrome (121588885121).

The spelling of 121353532000 in words is "one hundred twenty-one billion, three hundred fifty-three million, five hundred thirty-two thousand".