131220120000 has 280 divisors, whose sum is σ = 437728894416. Its totient is φ = 34678784000.

The previous prime is 131220119981. The next prime is 131220120011. The reversal of 131220120000 is 21022131.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 13555162 + ... + 13564838.

Almost surely, 2^131220120000 is an apocalyptic number.

131220120000 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 131220120000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (218864447208).

131220120000 is an abundant number, since it is smaller than the sum of its proper divisors (306508774416).

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

131220120000 is an equidigital number, since it uses as much as digits as its factorization.

131220120000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9825 (or 9800 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 131220120000 its reverse (21022131), we get a palindrome (131241142131).

The spelling of 131220120000 in words is "one hundred thirty-one billion, two hundred twenty million, one hundred twenty thousand".