211321311230 has 16 divisors (see below), whose sum is σ = 390658857120. Its totient is φ = 82243969632.

The previous prime is 211321311211. The next prime is 211321311233. The reversal of 211321311230 is 32113123112.

It is a happy number.

It is a super-2 number, since 2×211321311230² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211321311233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 285568970 + ... + 285569709.

It is an arithmetic number, because the mean of its divisors is an integer number (24416178570).

Almost surely, 2^211321311230 is an apocalyptic number.

211321311230 is a deficient number, since it is larger than the sum of its proper divisors (179337545890).

211321311230 is a wasteful number, since it uses less digits than its factorization.

211321311230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571138723.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 211321311230 its reverse (32113123112), we get a palindrome (243434434342).

The spelling of 211321311230 in words is "two hundred eleven billion, three hundred twenty-one million, three hundred eleven thousand, two hundred thirty".