1222022221111 has 2 divisors, whose sum is σ = 1222022221112. Its totient is φ = 1222022221110.

The previous prime is 1222022221097. The next prime is 1222022221141. The reversal of 1222022221111 is 1111222202221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1222022221111 - 2⁹ = 1222022220599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222022221141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611011110555 + 611011110556.

It is an arithmetic number, because the mean of its divisors is an integer number (611011110556).

Almost surely, 2^{1222022221111} is an apocalyptic number.

1222022221111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222022221111 is an equidigital number, since it uses as much as digits as its factorization.

1222022221111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 1222022221111 its reverse (1111222202221), we get a palindrome (2333244423332).

The spelling of 1222022221111 in words is "one trillion, two hundred twenty-two billion, twenty-two million, two hundred twenty-one thousand, one hundred eleven".