20212130 has 16 divisors (see below), whose sum is σ = 37636920. Its totient is φ = 7805952.

The previous prime is 20212117. The next prime is 20212151. The reversal of 20212130 is 3121202.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 20133169 + 78961 = 4487^2 + 281^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34559 + ... + 35138.

Almost surely, 2^20212130 is an apocalyptic number.

20212130 is a deficient number, since it is larger than the sum of its proper divisors (17424790).

20212130 is a wasteful number, since it uses less digits than its factorization.

20212130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69733.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 20212130 is about 4495.7902531146. The cubic root of 20212130 is about 272.3980709036.

Adding to 20212130 its reverse (3121202), we get a palindrome (23333332).

The spelling of 20212130 in words is "twenty million, two hundred twelve thousand, one hundred thirty".