211232220000000 has 288 divisors, whose sum is σ = 702730590848832. Its totient is φ = 56328576000000.

The previous prime is 211232219999971. The next prime is 211232220000001. The reversal of 211232220000000 is 22232112.

It is a happy number.

It is a super-2 number, since 2×211232220000000² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211232220000001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58239732 + ... + 61760268.

Almost surely, 2^{211232220000000} is an apocalyptic number.

211232220000000 is a gapful number since it is divisible by the number (20) 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 211232220000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (351365295424416).

211232220000000 is an abundant number, since it is smaller than the sum of its proper divisors (491498370848832).

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

211232220000000 is an frugal number, since it uses more digits than its factorization.

211232220000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3520591 (or 3520547 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 211232220000000 its reverse (22232112), we get a palindrome (211232242232112).

The spelling of 211232220000000 in words is "two hundred eleven trillion, two hundred thirty-two billion, two hundred twenty million", and thus it is an aban number.