222221001020111 has 2 divisors, whose sum is σ = 222221001020112. Its totient is φ = 222221001020110.

The previous prime is 222221001020093. The next prime is 222221001020113. The reversal of 222221001020111 is 111020100122222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 222221001020111 - 2¹⁸ = 222221000757967 is a prime.

Together with 222221001020113, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 222221001020111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222221001020113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111110500510055 + 111110500510056.

It is an arithmetic number, because the mean of its divisors is an integer number (111110500510056).

Almost surely, 2^{222221001020111} is an apocalyptic number.

222221001020111 is a deficient number, since it is larger than the sum of its proper divisors (1).

222221001020111 is an equidigital number, since it uses as much as digits as its factorization.

222221001020111 is an odious number, because the sum of its binary digits is odd.

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

Adding to 222221001020111 its reverse (111020100122222), we get a palindrome (333241101142333).

The spelling of 222221001020111 in words is "two hundred twenty-two trillion, two hundred twenty-one billion, one million, twenty thousand, one hundred eleven".