212012130020 has 24 divisors (see below), whose sum is σ = 449165526264. Its totient is φ = 84054365696.

The previous prime is 212012129947. The next prime is 212012130049. The reversal of 212012130020 is 20031210212.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8915891776 + 203096238244 = 94424^2 + 450662^2 .

It is a junction number, because it is equal to n+sod(n) for n = 212012129977 and 212012130004.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46903079 + ... + 46907598.

It is an arithmetic number, because the mean of its divisors is an integer number (18715230261).

Almost surely, 2^212012130020 is an apocalyptic number.

212012130020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212012130020 is an abundant number, since it is smaller than the sum of its proper divisors (237153396244).

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

212012130020 is a wasteful number, since it uses less digits than its factorization.

212012130020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93810799 (or 93810797 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 212012130020 its reverse (20031210212), we get a palindrome (232043340232).

The spelling of 212012130020 in words is "two hundred twelve billion, twelve million, one hundred thirty thousand, twenty".