131021220000 has 360 divisors, whose sum is σ = 472424375808. Its totient is φ = 31760960000.

The previous prime is 131021219947. The next prime is 131021220061. The reversal of 131021220000 is 22120131.

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

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 7250977 + ... + 7269023.

Almost surely, 2^131021220000 is an apocalyptic number.

131021220000 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 131021220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236212187904).

131021220000 is an abundant number, since it is smaller than the sum of its proper divisors (341403155808).

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

131021220000 is a wasteful number, since it uses less digits than its factorization.

131021220000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18102 (or 18068 counting only the distinct ones).

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

Adding to 131021220000 its reverse (22120131), we get a palindrome (131043340131).

The spelling of 131021220000 in words is "one hundred thirty-one billion, twenty-one million, two hundred twenty thousand".