2130203221220 has 24 divisors (see below), whose sum is σ = 4513014616824. Its totient is φ = 844540745216.

The previous prime is 2130203221213. The next prime is 2130203221249. The reversal of 2130203221220 is 221223020312.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 97480079524 + 2032723141696 = 312218^2 + 1425736^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 2130203221192 and 2130203221201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 471281639 + ... + 471286158.

It is an arithmetic number, because the mean of its divisors is an integer number (188042275701).

Almost surely, 2^{2130203221220} is an apocalyptic number.

2130203221220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2130203221220 is an abundant number, since it is smaller than the sum of its proper divisors (2382811395604).

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

2130203221220 is a wasteful number, since it uses less digits than its factorization.

2130203221220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 942567919 (or 942567917 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 2130203221220 its reverse (221223020312), we get a palindrome (2351426241532).

The spelling of 2130203221220 in words is "two trillion, one hundred thirty billion, two hundred three million, two hundred twenty-one thousand, two hundred twenty".