131230021121000 has 128 divisors (see below), whose sum is σ = 308804443234560. Its totient is φ = 52196988384000.

The previous prime is 131230021120999. The next prime is 131230021121009. The reversal of 131230021121000 is 121120032131.

It is a self number, because there is not a number n which added to its sum of digits gives 131230021121000.

It is not an unprimeable number, because it can be changed into a prime (131230021121009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2310074597 + ... + 2310131403.

It is an arithmetic number, because the mean of its divisors is an integer number (2412534712770).

Almost surely, 2^{131230021121000} is an apocalyptic number.

131230021121000 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 131230021121000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154402221617280).

131230021121000 is an abundant number, since it is smaller than the sum of its proper divisors (177574422113560).

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

131230021121000 is a wasteful number, since it uses less digits than its factorization.

131230021121000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69772 (or 69758 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 131230021121000 its reverse (121120032131), we get a palindrome (131351141153131).

The spelling of 131230021121000 in words is "one hundred thirty-one trillion, two hundred thirty billion, twenty-one million, one hundred twenty-one thousand".