212222110212 has 240 divisors, whose sum is σ = 674039076480. Its totient is φ = 56873664000.

The previous prime is 212222110201. The next prime is 212222110283. The reversal of 212222110212 is 212011222212.

It is a happy number.

212222110212 is a `hidden beast` number, since 21 + 222 + 211 + 0 + 212 = 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 79 ways as a sum of consecutive naturals, for example, 4327912 + ... + 4376672.

It is an arithmetic number, because the mean of its divisors is an integer number (2808496152).

Almost surely, 2^212222110212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212222110212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (337019538240).

212222110212 is an abundant number, since it is smaller than the sum of its proper divisors (461816966268).

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

212222110212 is a wasteful number, since it uses less digits than its factorization.

212222110212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48904 (or 48893 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 212222110212 its reverse (212011222212), we get a palindrome (424233332424).

The spelling of 212222110212 in words is "two hundred twelve billion, two hundred twenty-two million, one hundred ten thousand, two hundred twelve".