212225051424 has 96 divisors (see below), whose sum is σ = 564369603840. Its totient is φ = 69818112000.

The previous prime is 212225051411. The next prime is 212225051429. The reversal of 212225051424 is 424150522212.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 212225051391 and 212225051400.

It is not an unprimeable number, because it can be changed into a prime (212225051429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28064604 + ... + 28072164.

It is an arithmetic number, because the mean of its divisors is an integer number (5878850040).

Almost surely, 2^212225051424 is an apocalyptic number.

212225051424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212225051424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (282184801920).

212225051424 is an abundant number, since it is smaller than the sum of its proper divisors (352144552416).

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

212225051424 is a wasteful number, since it uses less digits than its factorization.

212225051424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11354 (or 11346 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 30.

Adding to 212225051424 its reverse (424150522212), we get a palindrome (636375573636).

The spelling of 212225051424 in words is "two hundred twelve billion, two hundred twenty-five million, fifty-one thousand, four hundred twenty-four".