2006221111 has 2 divisors, whose sum is σ = 2006221112. Its totient is φ = 2006221110.

The previous prime is 2006221057. The next prime is 2006221117. The reversal of 2006221111 is 1111226002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2006221111 - 2²¹ = 2004123959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2006221117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1003110555 + 1003110556.

It is an arithmetic number, because the mean of its divisors is an integer number (1003110556).

Almost surely, 2^2006221111 is an apocalyptic number.

2006221111 is a deficient number, since it is larger than the sum of its proper divisors (1).

2006221111 is an equidigital number, since it uses as much as digits as its factorization.

2006221111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 2006221111 is about 44790.8596814127. The cubic root of 2006221111 is about 1261.2260491883.

Adding to 2006221111 its reverse (1111226002), we get a palindrome (3117447113).

The spelling of 2006221111 in words is "two billion, six million, two hundred twenty-one thousand, one hundred eleven".