211223233133320 has 32 divisors (see below), whose sum is σ = 490582993086720. Its totient is φ = 81763832180160.

The previous prime is 211223233133219. The next prime is 211223233133321. The reversal of 211223233133320 is 23331332322112.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (211223233133321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85170657282 + ... + 85170659761.

It is an arithmetic number, because the mean of its divisors is an integer number (15330718533960).

Almost surely, 2^{211223233133320} is an apocalyptic number.

211223233133320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211223233133320 is an abundant number, since it is smaller than the sum of its proper divisors (279359759953400).

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

211223233133320 is a wasteful number, since it uses less digits than its factorization.

211223233133320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170341317085 (or 170341317081 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 31.

Adding to 211223233133320 its reverse (23331332322112), we get a palindrome (234554565455432).

The spelling of 211223233133320 in words is "two hundred eleven trillion, two hundred twenty-three billion, two hundred thirty-three million, one hundred thirty-three thousand, three hundred twenty".