212221320330 has 16 divisors (see below), whose sum is σ = 509331168864. Its totient is φ = 56592352080.

The previous prime is 212221320319. The next prime is 212221320341. The reversal of 212221320330 is 33023122212.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (212221320319) and next prime (212221320341).

It is a junction number, because it is equal to n+sod(n) for n = 212221320297 and 212221320306.

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, 3537021976 + ... + 3537022035.

It is an arithmetic number, because the mean of its divisors is an integer number (31833198054).

Almost surely, 2^212221320330 is an apocalyptic number.

212221320330 is an abundant number, since it is smaller than the sum of its proper divisors (297109848534).

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

212221320330 is a wasteful number, since it uses less digits than its factorization.

212221320330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7074044021.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 212221320330 its reverse (33023122212), we get a palindrome (245244442542).

The spelling of 212221320330 in words is "two hundred twelve billion, two hundred twenty-one million, three hundred twenty thousand, three hundred thirty".