212112210020 has 12 divisors (see below), whose sum is σ = 445435641084. Its totient is φ = 84844884000.

The previous prime is 212112210019. The next prime is 212112210029. The reversal of 212112210020 is 20012211212.

It can be written as a sum of positive squares in 2 ways, for example, as 21834790756 + 190277419264 = 147766^2 + 436208^2 .

It is a junction number, because it is equal to n+sod(n) for n = 212112209977 and 212112210004.

It is not an unprimeable number, because it can be changed into a prime (212112210029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5302805231 + ... + 5302805270.

It is an arithmetic number, because the mean of its divisors is an integer number (37119636757).

Almost surely, 2^212112210020 is an apocalyptic number.

212112210020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212112210020 is an abundant number, since it is smaller than the sum of its proper divisors (233323431064).

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

212112210020 is a wasteful number, since it uses less digits than its factorization.

212112210020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10605610510 (or 10605610508 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 212112210020 its reverse (20012211212), we get a palindrome (232124421232).

The spelling of 212112210020 in words is "two hundred twelve billion, one hundred twelve million, two hundred ten thousand, twenty".