212213130020 has 24 divisors (see below), whose sum is σ = 446910045624. Its totient is φ = 84644781056.

The previous prime is 212213129977. The next prime is 212213130023. The reversal of 212213130020 is 20031312212.

It can be written as a sum of positive squares in 4 ways, for example, as 3946854976 + 208266275044 = 62824^2 + 456362^2 .

It is not an unprimeable number, because it can be changed into a prime (212213130023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15022199 + ... + 15036318.

It is an arithmetic number, because the mean of its divisors is an integer number (18621251901).

Almost surely, 2^212213130020 is an apocalyptic number.

212213130020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212213130020 is an abundant number, since it is smaller than the sum of its proper divisors (234696915604).

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

212213130020 is a wasteful number, since it uses less digits than its factorization.

212213130020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30058879 (or 30058877 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 212213130020 its reverse (20031312212), we get a palindrome (232244442232).

The spelling of 212213130020 in words is "two hundred twelve billion, two hundred thirteen million, one hundred thirty thousand, twenty".