212011211322 has 80 divisors (see below), whose sum is σ = 479564236800. Its totient is φ = 70003815840.

The previous prime is 212011211309. The next prime is 212011211351. The reversal of 212011211322 is 223112110212.

212011211322 is a `hidden beast` number, since 2 + 120 + 11 + 211 + 322 = 666.

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 = 212011211295 and 212011211304.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 7380804 + ... + 7409472.

It is an arithmetic number, because the mean of its divisors is an integer number (5994552960).

Almost surely, 2^212011211322 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212011211322, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (239782118400).

212011211322 is an abundant number, since it is smaller than the sum of its proper divisors (267553025478).

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

212011211322 is a wasteful number, since it uses less digits than its factorization.

212011211322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29113 (or 29104 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 212011211322 its reverse (223112110212), we get a palindrome (435123321534).

The spelling of 212011211322 in words is "two hundred twelve billion, eleven million, two hundred eleven thousand, three hundred twenty-two".