212212104220 has 48 divisors (see below), whose sum is σ = 452315622528. Its totient is φ = 83620228160.

The previous prime is 212212104197. The next prime is 212212104233. The reversal of 212212104220 is 22401212212.

212212104220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 391815 + ... + 760225.

It is an arithmetic number, because the mean of its divisors is an integer number (9423242136).

Almost surely, 2^212212104220 is an apocalyptic number.

212212104220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212212104220 is an abundant number, since it is smaller than the sum of its proper divisors (240103518308).

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

212212104220 is a wasteful number, since it uses less digits than its factorization.

212212104220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368850 (or 368848 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 212212104220 its reverse (22401212212), we get a palindrome (234613316432).

The spelling of 212212104220 in words is "two hundred twelve billion, two hundred twelve million, one hundred four thousand, two hundred twenty".