211320023123220 has 96 divisors (see below), whose sum is σ = 646272837737856. Its totient is φ = 51166697971200.

The previous prime is 211320023123219. The next prime is 211320023123263. The reversal of 211320023123220 is 22321320023112.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 194453179 + ... + 195536898.

It is an arithmetic number, because the mean of its divisors is an integer number (6732008726436).

Almost surely, 2^{211320023123220} is an apocalyptic number.

211320023123220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211320023123220 is an abundant number, since it is smaller than the sum of its proper divisors (434952814614636).

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

211320023123220 is a wasteful number, since it uses less digits than its factorization.

211320023123220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389990921 (or 389990919 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 211320023123220 its reverse (22321320023112), we get a palindrome (233641343146332).

The spelling of 211320023123220 in words is "two hundred eleven trillion, three hundred twenty billion, twenty-three million, one hundred twenty-three thousand, two hundred twenty".