212223221330 has 32 divisors (see below), whose sum is σ = 391384995120. Its totient is φ = 82804833280.

The previous prime is 212223221321. The next prime is 212223221341. The reversal of 212223221330 is 33122322212.

It can be written as a sum of positive squares in 8 ways, for example, as 30996771481 + 181226449849 = 176059^2 + 425707^2 .

It is a junction number, because it is equal to n+sod(n) for n = 212223221296 and 212223221305.

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, 2578982 + ... + 2659998.

Almost surely, 2^212223221330 is an apocalyptic number.

212223221330 is a deficient number, since it is larger than the sum of its proper divisors (179161773790).

212223221330 is a wasteful number, since it uses less digits than its factorization.

212223221330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87454.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 212223221330 its reverse (33122322212), we get a palindrome (245345543542).

The spelling of 212223221330 in words is "two hundred twelve billion, two hundred twenty-three million, two hundred twenty-one thousand, three hundred thirty".