211311232120 has 16 divisors (see below), whose sum is σ = 475450272360. Its totient is φ = 84524492832.

The previous prime is 211311232051. The next prime is 211311232147. The reversal of 211311232120 is 21232113112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2641390362 + ... + 2641390441.

Almost surely, 2^211311232120 is an apocalyptic number.

211311232120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211311232120 is an abundant number, since it is smaller than the sum of its proper divisors (264139040240).

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

211311232120 is a wasteful number, since it uses less digits than its factorization.

211311232120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5282780814 (or 5282780810 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 211311232120 its reverse (21232113112), we get a palindrome (232543345232).

The spelling of 211311232120 in words is "two hundred eleven billion, three hundred eleven million, two hundred thirty-two thousand, one hundred twenty".