2211312012 has 96 divisors (see below), whose sum is σ = 6359808000. Its totient is φ = 582342912.

The previous prime is 2211312011. The next prime is 2211312053. The reversal of 2211312012 is 2102131122.

2211312012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 2211311982 and 2211312000.

It is not an unprimeable number, because it can be changed into a prime (2211312011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1133614 + ... + 1135562.

It is an arithmetic number, because the mean of its divisors is an integer number (66248000).

Almost surely, 2^2211312012 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 2211312012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3179904000).

2211312012 is an abundant number, since it is smaller than the sum of its proper divisors (4148495988).

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

2211312012 is a wasteful number, since it uses less digits than its factorization.

2211312012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3015 (or 3013 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 2211312012 is about 47024.5894399941. The cubic root of 2211312012 is about 1302.8167743986.

Adding to 2211312012 its reverse (2102131122), we get a palindrome (4313443134).

The spelling of 2211312012 in words is "two billion, two hundred eleven million, three hundred twelve thousand, twelve".