212030211222 has 128 divisors (see below), whose sum is σ = 512107401600. Its totient is φ = 64779264000.

The previous prime is 212030211199. The next prime is 212030211229. The reversal of 212030211222 is 222112030212.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 212030211195 and 212030211204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212030211229) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5637054 + ... + 5674542.

It is an arithmetic number, because the mean of its divisors is an integer number (4000839075).

Almost surely, 2^212030211222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212030211222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256053700800).

212030211222 is an abundant number, since it is smaller than the sum of its proper divisors (300077190378).

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

212030211222 is a wasteful number, since it uses less digits than its factorization.

212030211222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37679 (or 37673 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 212030211222 its reverse (222112030212), we get a palindrome (434142241434).

The spelling of 212030211222 in words is "two hundred twelve billion, thirty million, two hundred eleven thousand, two hundred twenty-two".