212230422240 has 48 divisors (see below), whose sum is σ = 668525831568. Its totient is φ = 56594779136.

The previous prime is 212230422233. The next prime is 212230422251. The reversal of 212230422240 is 42224032212.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 212230422240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221072877 + ... + 221073836.

It is an arithmetic number, because the mean of its divisors is an integer number (13927621491).

Almost surely, 2^212230422240 is an apocalyptic number.

212230422240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212230422240 is an abundant number, since it is smaller than the sum of its proper divisors (456295409328).

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

212230422240 is a wasteful number, since it uses less digits than its factorization.

212230422240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442146731 (or 442146723 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 212230422240 its reverse (42224032212), we get a palindrome (254454454452).

The spelling of 212230422240 in words is "two hundred twelve billion, two hundred thirty million, four hundred twenty-two thousand, two hundred forty".