121032131231200 has 144 divisors (see below), whose sum is σ = 337704520839840. Its totient is φ = 41493673912320.

The previous prime is 121032131231153. The next prime is 121032131231203. The reversal of 121032131231200 is 2132131230121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121032131231203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75891606 + ... + 77469994.

It is an arithmetic number, because the mean of its divisors is an integer number (2345170283610).

Almost surely, 2^{121032131231200} is an apocalyptic number.

121032131231200 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 121032131231200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168852260419920).

121032131231200 is an abundant number, since it is smaller than the sum of its proper divisors (216672389608640).

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

121032131231200 is a wasteful number, since it uses less digits than its factorization.

121032131231200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1592109 (or 1592096 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 121032131231200 its reverse (2132131230121), we get a palindrome (123164262461321).

The spelling of 121032131231200 in words is "one hundred twenty-one trillion, thirty-two billion, one hundred thirty-one million, two hundred thirty-one thousand, two hundred".