212224313223220 has 48 divisors (see below), whose sum is σ = 453773235560400. Its totient is φ = 83351344849920.

The previous prime is 212224313223199. The next prime is 212224313223269. The reversal of 212224313223220 is 22322313422212.

It can be written as a sum of positive squares in 8 ways, for example, as 115974204033424 + 96250109189796 = 10769132^2 + 9810714^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 152165535 + ... + 153553894.

It is an arithmetic number, because the mean of its divisors is an integer number (9453609074175).

Almost surely, 2^{212224313223220} is an apocalyptic number.

212224313223220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212224313223220 is an abundant number, since it is smaller than the sum of its proper divisors (241548922337180).

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

212224313223220 is a wasteful number, since it uses less digits than its factorization.

212224313223220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305720068 (or 305720066 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 212224313223220 its reverse (22322313422212), we get a palindrome (234546626645432).

The spelling of 212224313223220 in words is "two hundred twelve trillion, two hundred twenty-four billion, three hundred thirteen million, two hundred twenty-three thousand, two hundred twenty".