212221110020 has 48 divisors (see below), whose sum is σ = 450747799488. Its totient is φ = 83923405440.

The previous prime is 212221109983. The next prime is 212221110037. The reversal of 212221110020 is 20011122212.

212221110020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 212221109977 and 212221110004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 949754 + ... + 1151726.

It is an arithmetic number, because the mean of its divisors is an integer number (9390579156).

Almost surely, 2^212221110020 is an apocalyptic number.

212221110020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212221110020 is an abundant number, since it is smaller than the sum of its proper divisors (238526689468).

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

212221110020 is a wasteful number, since it uses less digits than its factorization.

212221110020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202580 (or 202578 counting only the distinct ones).

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

Adding to 212221110020 its reverse (20011122212), we get a palindrome (232232232232).

The spelling of 212221110020 in words is "two hundred twelve billion, two hundred twenty-one million, one hundred ten thousand, twenty".