212021211130 has 16 divisors (see below), whose sum is σ = 388838901384. Its totient is φ = 83208324160.

The previous prime is 212021211119. The next prime is 212021211139. The reversal of 212021211130 is 31112120212.

It can be written as a sum of positive squares in 4 ways, for example, as 161747948041 + 50273263089 = 402179^2 + 224217^2 .

It is not an unprimeable number, because it can be changed into a prime (212021211139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200019481 + ... + 200020540.

Almost surely, 2^212021211130 is an apocalyptic number.

212021211130 is a deficient number, since it is larger than the sum of its proper divisors (176817690254).

212021211130 is a wasteful number, since it uses less digits than its factorization.

212021211130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400040081.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 212021211130 its reverse (31112120212), we get a palindrome (243133331342).

The spelling of 212021211130 in words is "two hundred twelve billion, twenty-one million, two hundred eleven thousand, one hundred thirty".