212020223130 has 48 divisors (see below), whose sum is σ = 556710550344. Its totient is φ = 55978934400.

The previous prime is 212020223123. The next prime is 212020223131. The reversal of 212020223130 is 31322020212.

It can be written as a sum of positive squares in 4 ways, for example, as 202173431769 + 9846791361 = 449637^2 + 99231^2 .

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

It is not an unprimeable number, because it can be changed into a prime (212020223131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11653189 + ... + 11671368.

Almost surely, 2^212020223130 is an apocalyptic number.

212020223130 is an abundant number, since it is smaller than the sum of its proper divisors (344690327214).

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

212020223130 is a wasteful number, since it uses less digits than its factorization.

212020223130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23324671 (or 23324668 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 212020223130 its reverse (31322020212), we get a palindrome (243342243342).

The spelling of 212020223130 in words is "two hundred twelve billion, twenty million, two hundred twenty-three thousand, one hundred thirty".