220011221201111 has 2 divisors, whose sum is σ = 220011221201112. Its totient is φ = 220011221201110.

The previous prime is 220011221201077. The next prime is 220011221201141. The reversal of 220011221201111 is 111102122110022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 220011221201111 - 2¹⁸ = 220011220938967 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220011221201111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220011221201141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110005610600555 + 110005610600556.

It is an arithmetic number, because the mean of its divisors is an integer number (110005610600556).

Almost surely, 2^{220011221201111} is an apocalyptic number.

220011221201111 is a deficient number, since it is larger than the sum of its proper divisors (1).

220011221201111 is an equidigital number, since it uses as much as digits as its factorization.

220011221201111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 220011221201111 its reverse (111102122110022), we get a palindrome (331113343311133).

The spelling of 220011221201111 in words is "two hundred twenty trillion, eleven billion, two hundred twenty-one million, two hundred one thousand, one hundred eleven".