212222503530 has 24 divisors (see below), whose sum is σ = 551778509412. Its totient is φ = 56592667584.

The previous prime is 212222503489. The next prime is 212222503547. The reversal of 212222503530 is 35305222212.

212222503530 is a `hidden beast` number, since 2 + 122 + 2 + 2 + 5 + 0 + 3 + 530 = 666.

212222503530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 208617822009 + 3604681521 = 456747^2 + 60039^2 .

It is a junction number, because it is equal to n+sod(n) for n = 212222503494 and 212222503503.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1179013819 + ... + 1179013998.

Almost surely, 2^212222503530 is an apocalyptic number.

212222503530 is an abundant number, since it is smaller than the sum of its proper divisors (339556005882).

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

212222503530 is a wasteful number, since it uses less digits than its factorization.

212222503530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2358027830 (or 2358027827 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

Adding to 212222503530 its reverse (35305222212), we get a palindrome (247527725742).

The spelling of 212222503530 in words is "two hundred twelve billion, two hundred twenty-two million, five hundred three thousand, five hundred thirty".