212321231330 has 64 divisors (see below), whose sum is σ = 425891692800. Its totient is φ = 75670398720.

The previous prime is 212321231323. The next prime is 212321231363. The reversal of 212321231330 is 33132123212.

It is a junction number, because it is equal to n+sod(n) for n = 212321231296 and 212321231305.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18885851 + ... + 18897089.

It is an arithmetic number, because the mean of its divisors is an integer number (6654557700).

Almost surely, 2^212321231330 is an apocalyptic number.

212321231330 is an abundant number, since it is smaller than the sum of its proper divisors (213570461470).

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

212321231330 is a wasteful number, since it uses less digits than its factorization.

212321231330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16299.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 212321231330 its reverse (33132123212), we get a palindrome (245453354542).

The spelling of 212321231330 in words is "two hundred twelve billion, three hundred twenty-one million, two hundred thirty-one thousand, three hundred thirty".