2012211311 has 4 divisors (see below), whose sum is σ = 2195139624. Its totient is φ = 1829283000.

The previous prime is 2012211277. The next prime is 2012211317. The reversal of 2012211311 is 1131122102.

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 2012211311 - 2²² = 2008017007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012211317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91464140 + ... + 91464161.

It is an arithmetic number, because the mean of its divisors is an integer number (548784906).

Almost surely, 2^2012211311 is an apocalyptic number.

2012211311 is a deficient number, since it is larger than the sum of its proper divisors (182928313).

2012211311 is a wasteful number, since it uses less digits than its factorization.

2012211311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182928312.

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

The square root of 2012211311 is about 44857.6783951198. The cubic root of 2012211311 is about 1262.4800634175.

Adding to 2012211311 its reverse (1131122102), we get a palindrome (3143333413).

The spelling of 2012211311 in words is "two billion, twelve million, two hundred eleven thousand, three hundred eleven".