212212120210020 has 144 divisors (see below), whose sum is σ = 748137644392320. Its totient is φ = 47683498180608.

The previous prime is 212212120210003. The next prime is 212212120210021. The reversal of 212212120210020 is 20012021212212.

It is a happy number.

212212120210020 is a `hidden beast` number, since 2 + 1 + 221 + 212 + 0 + 210 + 0 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 212212120209975 and 212212120210002.

It is not an unprimeable number, because it can be changed into a prime (212212120210021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1427233437 + ... + 1427382116.

It is an arithmetic number, because the mean of its divisors is an integer number (5195400308280).

Almost surely, 2^{212212120210020} is an apocalyptic number.

212212120210020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212212120210020 is an abundant number, since it is smaller than the sum of its proper divisors (535925524182300).

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

212212120210020 is a wasteful number, since it uses less digits than its factorization.

212212120210020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2854615634 (or 2854615629 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 212212120210020 its reverse (20012021212212), we get a palindrome (232224141422232).

The spelling of 212212120210020 in words is "two hundred twelve trillion, two hundred twelve billion, one hundred twenty million, two hundred ten thousand, twenty".