2011231211 has 4 divisors (see below), whose sum is σ = 2194070424. Its totient is φ = 1828392000.

The previous prime is 2011231207. The next prime is 2011231219. The reversal of 2011231211 is 1121321102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2011231211 - 2² = 2011231207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2011231219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91419590 + ... + 91419611.

It is an arithmetic number, because the mean of its divisors is an integer number (548517606).

Almost surely, 2^2011231211 is an apocalyptic number.

2011231211 is a deficient number, since it is larger than the sum of its proper divisors (182839213).

2011231211 is a wasteful number, since it uses less digits than its factorization.

2011231211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182839212.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 2011231211 is about 44846.7525134206. The cubic root of 2011231211 is about 1262.2750555151.

Adding to 2011231211 its reverse (1121321102), we get a palindrome (3132552313).

The spelling of 2011231211 in words is "two billion, eleven million, two hundred thirty-one thousand, two hundred eleven".