2011122012211 has 4 divisors (see below), whose sum is σ = 2165823705472. Its totient is φ = 1856420318952.

The previous prime is 2011122012191. The next prime is 2011122012233. The reversal of 2011122012211 is 1122102211102.

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 2011122012211 - 2⁹ = 2011122011699 is a prime.

It is a super-2 number, since 2×2011122012211² (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 (2011122012281) 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, 77350846611 + ... + 77350846636.

It is an arithmetic number, because the mean of its divisors is an integer number (541455926368).

Almost surely, 2^{2011122012211} is an apocalyptic number.

2011122012211 is a deficient number, since it is larger than the sum of its proper divisors (154701693261).

2011122012211 is a wasteful number, since it uses less digits than its factorization.

2011122012211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154701693260.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2011122012211 its reverse (1122102211102), we get a palindrome (3133224223313).

The spelling of 2011122012211 in words is "two trillion, eleven billion, one hundred twenty-two million, twelve thousand, two hundred eleven".