212021103220 has 48 divisors (see below), whose sum is σ = 456269381568. Its totient is φ = 82709930240.

The previous prime is 212021103211. The next prime is 212021103247. The reversal of 212021103220 is 22301120212.

It is a happy number.

212021103220 is digitally balanced in base 2, 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 = 212021103194 and 212021103203.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2285787 + ... + 2376733.

It is an arithmetic number, because the mean of its divisors is an integer number (9505612116).

Almost surely, 2^212021103220 is an apocalyptic number.

212021103220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212021103220 is an abundant number, since it is smaller than the sum of its proper divisors (244248278348).

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

212021103220 is a wasteful number, since it uses less digits than its factorization.

212021103220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93840 (or 93838 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 212021103220 its reverse (22301120212), we get a palindrome (234322223432).

The spelling of 212021103220 in words is "two hundred twelve billion, twenty-one million, one hundred three thousand, two hundred twenty".