2211693312 has 54 divisors (see below), whose sum is σ = 5889800308. Its totient is φ = 736796672.

The previous prime is 2211693311. The next prime is 2211693377. The reversal of 2211693312 is 2133961122.

It is a self number, because there is not a number n which added to its sum of digits gives 2211693312.

It is not an unprimeable number, because it can be changed into a prime (2211693311) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1302448 + ... + 1304144.

Almost surely, 2^2211693312 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 2211693312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2944900154).

2211693312 is an abundant number, since it is smaller than the sum of its proper divisors (3678106996).

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

2211693312 is an frugal number, since it uses more digits than its factorization.

2211693312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3413 (or 1702 counting only the distinct ones).

The product of its digits is 3888, while the sum is 30.

The square root of 2211693312 is about 47028.6435271102. The cubic root of 2211693312 is about 1302.8916523419.

Multiplying 2211693312 by its product of digits (3888), we get a square (8599063597056 = 2932416²).

The spelling of 2211693312 in words is "two billion, two hundred eleven million, six hundred ninety-three thousand, three hundred twelve".