212021122001020 has 24 divisors (see below), whose sum is σ = 445245283388304. Its totient is φ = 84808272193536.

The previous prime is 212021122001011. The next prime is 212021122001027. The reversal of 212021122001020 is 20100221120212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 212021122000985 and 212021122001003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212021122001027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 969622 + ... + 20615101.

It is an arithmetic number, because the mean of its divisors is an integer number (18551886807846).

Almost surely, 2^{212021122001020} is an apocalyptic number.

212021122001020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212021122001020 is an abundant number, since it is smaller than the sum of its proper divisors (233224161387284).

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

212021122001020 is a wasteful number, since it uses less digits than its factorization.

212021122001020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22075869 (or 22075867 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 212021122001020 its reverse (20100221120212), we get a palindrome (232121343121232).

The spelling of 212021122001020 in words is "two hundred twelve trillion, twenty-one billion, one hundred twenty-two million, one thousand, twenty".