212001110221020 has 48 divisors (see below), whose sum is σ = 595284703886880. Its totient is φ = 56373477462016.

The previous prime is 212001110221007. The next prime is 212001110221037. The reversal of 212001110221020 is 20122011100212.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5004726465 + ... + 5004768824.

It is an arithmetic number, because the mean of its divisors is an integer number (12401764664310).

Almost surely, 2^{212001110221020} is an apocalyptic number.

212001110221020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212001110221020 is an abundant number, since it is smaller than the sum of its proper divisors (383283593665860).

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

212001110221020 is a wasteful number, since it uses less digits than its factorization.

212001110221020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10009495654 (or 10009495652 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 212001110221020 its reverse (20122011100212), we get a palindrome (232123121321232).

The spelling of 212001110221020 in words is "two hundred twelve trillion, one billion, one hundred ten million, two hundred twenty-one thousand, twenty".