2011212011 has 4 divisors (see below), whose sum is σ = 2013656592. Its totient is φ = 2008767432.

The previous prime is 2011211999. The next prime is 2011212053. The reversal of 2011212011 is 1102121102.

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 2011212011 - 2⁶ = 2011211947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2011211983 and 2011212001.

It is not an unprimeable number, because it can be changed into a prime (2011212061) 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, 1221056 + ... + 1222701.

It is an arithmetic number, because the mean of its divisors is an integer number (503414148).

Almost surely, 2^2011212011 is an apocalyptic number.

2011212011 is a deficient number, since it is larger than the sum of its proper divisors (2444581).

2011212011 is an equidigital number, since it uses as much as digits as its factorization.

2011212011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2444580.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 2011212011 is about 44846.5384505872. The cubic root of 2011212011 is about 1262.2710387785.

Adding to 2011212011 its reverse (1102121102), we get a palindrome (3113333113).

Subtracting from 2011212011 its reverse (1102121102), we obtain a palindrome (909090909).

It can be divided in two parts, 20112 and 12011, that added together give a palindrome (32123).

The spelling of 2011212011 in words is "two billion, eleven million, two hundred twelve thousand, eleven".