211330321230 has 64 divisors (see below), whose sum is σ = 579686957568. Its totient is φ = 48300900480.

The previous prime is 211330321183. The next prime is 211330321243. The reversal of 211330321230 is 32123033112.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 211330321197 and 211330321206.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4971165 + ... + 5013495.

It is an arithmetic number, because the mean of its divisors is an integer number (9057608712).

Almost surely, 2^211330321230 is an apocalyptic number.

211330321230 is an abundant number, since it is smaller than the sum of its proper divisors (368356636338).

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

211330321230 is a wasteful number, since it uses less digits than its factorization.

211330321230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66121.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 211330321230 its reverse (32123033112), we get a palindrome (243453354342).

The spelling of 211330321230 in words is "two hundred eleven billion, three hundred thirty million, three hundred twenty-one thousand, two hundred thirty".