2130312220 has 48 divisors (see below), whose sum is σ = 4525422048. Its totient is φ = 842301440.

The previous prime is 2130312161. The next prime is 2130312227. The reversal of 2130312220 is 222130312.

It is a junction number, because it is equal to n+sod(n) for n = 2130312194 and 2130312203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2130312227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1370964 + ... + 1372516.

It is an arithmetic number, because the mean of its divisors is an integer number (94279626).

Almost surely, 2^2130312220 is an apocalyptic number.

2130312220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2130312220 is an abundant number, since it is smaller than the sum of its proper divisors (2395109828).

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

2130312220 is a wasteful number, since it uses less digits than its factorization.

2130312220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2310 (or 2308 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2130312220 is about 46155.3054371867. The cubic root of 2130312220 is about 1286.7112147170.

Adding to 2130312220 its reverse (222130312), we get a palindrome (2352442532).

The spelling of 2130312220 in words is "two billion, one hundred thirty million, three hundred twelve thousand, two hundred twenty".