2011612211 has 8 divisors (see below), whose sum is σ = 2299613184. Its totient is φ = 1723768200.

The previous prime is 2011612181. The next prime is 2011612217. The reversal of 2011612211 is 1122161102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-2011612211 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2011612211.

It is not an unprimeable number, because it can be changed into a prime (2011612217) 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, 10355 + ... + 64268.

It is an arithmetic number, because the mean of its divisors is an integer number (287451648).

Almost surely, 2^2011612211 is an apocalyptic number.

2011612211 is a deficient number, since it is larger than the sum of its proper divisors (288000973).

2011612211 is an equidigital number, since it uses as much as digits as its factorization.

2011612211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78481.

The product of its (nonzero) digits is 48, while the sum is 17.

The square root of 2011612211 is about 44851.0001114802. Note that the first 3 decimals coincide. The cubic root of 2011612211 is about 1262.3547573462.

Adding to 2011612211 its reverse (1122161102), we get a palindrome (3133773313).

The spelling of 2011612211 in words is "two billion, eleven million, six hundred twelve thousand, two hundred eleven".