2012211111011 has 4 divisors (see below), whose sum is σ = 2014093442400. Its totient is φ = 2010328779624.

The previous prime is 2012211110983. The next prime is 2012211111013. The reversal of 2012211111011 is 1101111122102.

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 2012211111011 - 2¹⁴ = 2012211094627 is a prime.

It is a super-2 number, since 2×2012211111011² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2012211111013) 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, 941164091 + ... + 941166228.

It is an arithmetic number, because the mean of its divisors is an integer number (503523360600).

Almost surely, 2^{2012211111011} is an apocalyptic number.

2012211111011 is a deficient number, since it is larger than the sum of its proper divisors (1882331389).

2012211111011 is a wasteful number, since it uses less digits than its factorization.

2012211111011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1882331388.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 2012211111011 its reverse (1101111122102), we get a palindrome (3113322233113).

The spelling of 2012211111011 in words is "two trillion, twelve billion, two hundred eleven million, one hundred eleven thousand, eleven".