212201220020020 has 96 divisors (see below), whose sum is σ = 588262633539840. Its totient is φ = 62250014115840.

The previous prime is 212201220019993. The next prime is 212201220020021. The reversal of 212201220020020 is 20020022102212.

It is a junction number, because it is equal to n+sod(n) for n = 212201220019976 and 212201220020003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212201220020021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4052709115 + ... + 4052761474.

It is an arithmetic number, because the mean of its divisors is an integer number (6127735766040).

Almost surely, 2^{212201220020020} is an apocalyptic number.

212201220020020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212201220020020 is an abundant number, since it is smaller than the sum of its proper divisors (376061413519820).

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

212201220020020 is a wasteful number, since it uses less digits than its factorization.

212201220020020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8105470633 (or 8105470631 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 212201220020020 its reverse (20020022102212), we get a palindrome (232221242122232).

The spelling of 212201220020020 in words is "two hundred twelve trillion, two hundred one billion, two hundred twenty million, twenty thousand, twenty".