2011312212 has 96 divisors (see below), whose sum is σ = 5894112000. Its totient is φ = 530441856.

The previous prime is 2011312201. The next prime is 2011312231. The reversal of 2011312212 is 2122131102.

It is a junction number, because it is equal to n+sod(n) for n = 2011312191 and 2011312200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34714 + ... + 72302.

It is an arithmetic number, because the mean of its divisors is an integer number (61397000).

Almost surely, 2^2011312212 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 2011312212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2947056000).

2011312212 is an abundant number, since it is smaller than the sum of its proper divisors (3882799788).

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

2011312212 is a wasteful number, since it uses less digits than its factorization.

2011312212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37630 (or 37614 counting only the distinct ones).

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

The square root of 2011312212 is about 44847.6555909002. The cubic root of 2011312212 is about 1262.2920010505.

Adding to 2011312212 its reverse (2122131102), we get a palindrome (4133443314).

The spelling of 2011312212 in words is "two billion, eleven million, three hundred twelve thousand, two hundred twelve".