2011011110221 has 2 divisors, whose sum is σ = 2011011110222. Its totient is φ = 2011011110220.

The previous prime is 2011011110183. The next prime is 2011011110267. The reversal of 2011011110221 is 1220111101102.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2010551007721 + 460102500 = 1417939^2 + 21450^2 .

It is a cyclic number.

It is not a de Polignac number, because 2011011110221 - 2²⁹ = 2010474239309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2011011110291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005505555110 + 1005505555111.

It is an arithmetic number, because the mean of its divisors is an integer number (1005505555111).

Almost surely, 2^{2011011110221} is an apocalyptic number.

It is an amenable number.

2011011110221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011011110221 is an equidigital number, since it uses as much as digits as its factorization.

2011011110221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 2011011110221 its reverse (1220111101102), we get a palindrome (3231122211323).

The spelling of 2011011110221 in words is "two trillion, eleven billion, eleven million, one hundred ten thousand, two hundred twenty-one".