2011233020221 has 2 divisors, whose sum is σ = 2011233020222. Its totient is φ = 2011233020220.

The previous prime is 2011233020179. The next prime is 2011233020249. The reversal of 2011233020221 is 1220203321102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1233510103225 + 777722916996 = 1110635^2 + 881886^2 .

It is a cyclic number.

It is not a de Polignac number, because 2011233020221 - 2⁹ = 2011233019709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2011233020921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005616510110 + 1005616510111.

It is an arithmetic number, because the mean of its divisors is an integer number (1005616510111).

Almost surely, 2^{2011233020221} is an apocalyptic number.

It is an amenable number.

2011233020221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011233020221 is an equidigital number, since it uses as much as digits as its factorization.

2011233020221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 2011233020221 its reverse (1220203321102), we get a palindrome (3231436341323).

The spelling of 2011233020221 in words is "two trillion, eleven billion, two hundred thirty-three million, twenty thousand, two hundred twenty-one".