20222220011111 has 2 divisors, whose sum is σ = 20222220011112. Its totient is φ = 20222220011110.

The previous prime is 20222220011033. The next prime is 20222220011117. The reversal of 20222220011111 is 11111002222202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20222220011111 - 2¹⁸ = 20222219748967 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20222220011111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20222220011117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10111110005555 + 10111110005556.

It is an arithmetic number, because the mean of its divisors is an integer number (10111110005556).

Almost surely, 2^{20222220011111} is an apocalyptic number.

20222220011111 is a deficient number, since it is larger than the sum of its proper divisors (1).

20222220011111 is an equidigital number, since it uses as much as digits as its factorization.

20222220011111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 20222220011111 its reverse (11111002222202), we get a palindrome (31333222233313).

The spelling of 20222220011111 in words is "twenty trillion, two hundred twenty-two billion, two hundred twenty million, eleven thousand, one hundred eleven".