2011122312 has 32 divisors (see below), whose sum is σ = 5122673280. Its totient is φ = 657725120.

The previous prime is 2011122307. The next prime is 2011122319. The reversal of 2011122312 is 2132211102.

It is a super-2 number, since 2×2011122312² = 8089225907648450688, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2011122291 and 2011122300.

It is not an unprimeable number, because it can be changed into a prime (2011122319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 789264 + ... + 791807.

It is an arithmetic number, because the mean of its divisors is an integer number (160083540).

Almost surely, 2^2011122312 is an apocalyptic number.

It is an amenable number.

2011122312 is an abundant number, since it is smaller than the sum of its proper divisors (3111550968).

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

2011122312 is a wasteful number, since it uses less digits than its factorization.

2011122312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1581133 (or 1581129 counting only the distinct ones).

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

The square root of 2011122312 is about 44845.5383733990. The cubic root of 2011122312 is about 1262.2522729576.

Adding to 2011122312 its reverse (2132211102), we get a palindrome (4143333414).

The spelling of 2011122312 in words is "two billion, eleven million, one hundred twenty-two thousand, three hundred twelve".