121112530000 has 600 divisors, whose sum is σ = 375072938240. Its totient is φ = 37065600000.

The previous prime is 121112529943. The next prime is 121112530001. The reversal of 121112530000 is 35211121.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121112530001) by changing a digit.

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 119 ways as a sum of consecutive naturals, for example, 669129910 + ... + 669130090.

Almost surely, 2^121112530000 is an apocalyptic number.

121112530000 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 121112530000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187536469120).

121112530000 is an abundant number, since it is smaller than the sum of its proper divisors (253960408240).

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

121112530000 is a wasteful number, since it uses less digits than its factorization.

121112530000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317 (or 285 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 16.

Adding to 121112530000 its reverse (35211121), we get a palindrome (121147741121).

The spelling of 121112530000 in words is "one hundred twenty-one billion, one hundred twelve million, five hundred thirty thousand".