212444240220 has 36 divisors (see below), whose sum is σ = 644414195880. Its totient is φ = 56651797344.

The previous prime is 212444240209. The next prime is 212444240227. The reversal of 212444240220 is 22042444212.

212444240220 is a `hidden beast` number, since 2 + 12 + 4 + 4 + 424 + 0 + 220 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212444240227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 590122710 + ... + 590123069.

It is an arithmetic number, because the mean of its divisors is an integer number (17900394330).

Almost surely, 2^212444240220 is an apocalyptic number.

212444240220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212444240220 is an abundant number, since it is smaller than the sum of its proper divisors (431969955660).

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

212444240220 is a wasteful number, since it uses less digits than its factorization.

212444240220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1180245794 (or 1180245789 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 27.

Adding to 212444240220 its reverse (22042444212), we get a palindrome (234486684432).

The spelling of 212444240220 in words is "two hundred twelve billion, four hundred forty-four million, two hundred forty thousand, two hundred twenty".