211231023330 has 16 divisors (see below), whose sum is σ = 506954456064. Its totient is φ = 56328272880.

The previous prime is 211231023323. The next prime is 211231023331. The reversal of 211231023330 is 33320132112.

It is a junction number, because it is equal to n+sod(n) for n = 211231023297 and 211231023306.

It is not an unprimeable number, because it can be changed into a prime (211231023331) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3520517026 + ... + 3520517085.

It is an arithmetic number, because the mean of its divisors is an integer number (31684653504).

Almost surely, 2^211231023330 is an apocalyptic number.

211231023330 is an abundant number, since it is smaller than the sum of its proper divisors (295723432734).

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

211231023330 is a wasteful number, since it uses less digits than its factorization.

211231023330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7041034121.

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

Adding to 211231023330 its reverse (33320132112), we get a palindrome (244551155442).

The spelling of 211231023330 in words is "two hundred eleven billion, two hundred thirty-one million, twenty-three thousand, three hundred thirty".