211223220032 has 112 divisors (see below), whose sum is σ = 484403473152. Its totient is φ = 90315079680.

The previous prime is 211223220007. The next prime is 211223220071. The reversal of 211223220032 is 230022322112.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 211223219986 and 211223220013.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 31508393 + ... + 31515095.

Almost surely, 2^211223220032 is an apocalyptic number.

211223220032 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211223220032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242201736576).

211223220032 is an abundant number, since it is smaller than the sum of its proper divisors (273180253120).

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

211223220032 is a wasteful number, since it uses less digits than its factorization.

211223220032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9376 (or 9366 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 211223220032 its reverse (230022322112), we get a palindrome (441245542144).

The spelling of 211223220032 in words is "two hundred eleven billion, two hundred twenty-three million, two hundred twenty thousand, thirty-two".