2212209612 has 72 divisors (see below), whose sum is σ = 5836652640. Its totient is φ = 705818880.

The previous prime is 2212209611. The next prime is 2212209617. The reversal of 2212209612 is 2169022122.

It is a happy number.

2212209612 is a `hidden beast` number, since 2 + 21 + 2 + 20 + 9 + 612 = 666.

It is not an unprimeable number, because it can be changed into a prime (2212209611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64089 + ... + 92367.

It is an arithmetic number, because the mean of its divisors is an integer number (81064620).

Almost surely, 2^2212209612 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 2212209612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2918326320).

2212209612 is an abundant number, since it is smaller than the sum of its proper divisors (3624443028).

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

2212209612 is a wasteful number, since it uses less digits than its factorization.

2212209612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28383 (or 28378 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 2212209612 is about 47034.1324146624. The cubic root of 2212209612 is about 1302.9930272506.

The spelling of 2212209612 in words is "two billion, two hundred twelve million, two hundred nine thousand, six hundred twelve".