212111322210 has 192 divisors, whose sum is σ = 565671600000. Its totient is φ = 55129890816.

The previous prime is 212111322209. The next prime is 212111322239. The reversal of 212111322210 is 12223111212.

212111322210 is a `hidden beast` number, since 2 + 121 + 11 + 322 + 210 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 425072541 + ... + 425073039.

It is an arithmetic number, because the mean of its divisors is an integer number (2946206250).

Almost surely, 2^212111322210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212111322210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (282835800000).

212111322210 is an abundant number, since it is smaller than the sum of its proper divisors (353560277790).

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

212111322210 is a wasteful number, since it uses less digits than its factorization.

212111322210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1185 (or 1182 counting only the distinct ones).

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

Adding to 212111322210 its reverse (12223111212), we get a palindrome (224334433422).

The spelling of 212111322210 in words is "two hundred twelve billion, one hundred eleven million, three hundred twenty-two thousand, two hundred ten".