2011212111 has 8 divisors (see below), whose sum is σ = 2822753920. Its totient is φ = 1270239192.

The previous prime is 2011212107. The next prime is 2011212127. The reversal of 2011212111 is 1112121102.

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

It is not a de Polignac number, because 2011212111 - 2² = 2011212107 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 (2011212131) 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, 17642155 + ... + 17642268.

It is an arithmetic number, because the mean of its divisors is an integer number (352844240).

Almost surely, 2^2011212111 is an apocalyptic number.

2011212111 is a deficient number, since it is larger than the sum of its proper divisors (811541809).

2011212111 is a wasteful number, since it uses less digits than its factorization.

2011212111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35284445.

The product of its (nonzero) digits is 8, while the sum is 12.

The square root of 2011212111 is about 44846.5395655005. The cubic root of 2011212111 is about 1262.2710596990.

Adding to 2011212111 its reverse (1112121102), we get a palindrome (3123333213).

It can be divided in two parts, 20112 and 12111, that added together give a palindrome (32223).

The spelling of 2011212111 in words is "two billion, eleven million, two hundred twelve thousand, one hundred eleven".