212224044420 has 72 divisors (see below), whose sum is σ = 643800568320. Its totient is φ = 56588304960.

The previous prime is 212224044343. The next prime is 212224044449. The reversal of 212224044420 is 24440422212.

212224044420 is a `hidden beast` number, since 2 + 12 + 224 + 0 + 4 + 4 + 420 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2433775 + ... + 2519465.

It is an arithmetic number, because the mean of its divisors is an integer number (8941674560).

Almost surely, 2^212224044420 is an apocalyptic number.

212224044420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212224044420 is an abundant number, since it is smaller than the sum of its proper divisors (431576523900).

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

212224044420 is a wasteful number, since it uses less digits than its factorization.

212224044420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99465 (or 99460 counting only the distinct ones).

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

Adding to 212224044420 its reverse (24440422212), we get a palindrome (236664466632).

The spelling of 212224044420 in words is "two hundred twelve billion, two hundred twenty-four million, forty-four thousand, four hundred twenty".