2131130210220 has 144 divisors (see below), whose sum is σ = 7057634377248. Its totient is φ = 516232442880.

The previous prime is 2131130210207. The next prime is 2131130210249. The reversal of 2131130210220 is 220120311312.

2131130210220 is a `hidden beast` number, since 2 + 131 + 1 + 302 + 10 + 220 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2131130210193 and 2131130210202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2107032 + ... + 2949888.

It is an arithmetic number, because the mean of its divisors is an integer number (49011349842).

Almost surely, 2^{2131130210220} is an apocalyptic number.

2131130210220 is a gapful number since it is divisible by the number (20) 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 2131130210220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3528817188624).

2131130210220 is an abundant number, since it is smaller than the sum of its proper divisors (4926504167028).

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

2131130210220 is a wasteful number, since it uses less digits than its factorization.

2131130210220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 844160 (or 844155 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 2131130210220 its reverse (220120311312), we get a palindrome (2351250521532).

The spelling of 2131130210220 in words is "two trillion, one hundred thirty-one billion, one hundred thirty million, two hundred ten thousand, two hundred twenty".