1222011101111 has 2 divisors, whose sum is σ = 1222011101112. Its totient is φ = 1222011101110.

The previous prime is 1222011101107. The next prime is 1222011101147. The reversal of 1222011101111 is 1111011102221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1222011101111 - 2² = 1222011101107 is a prime.

It is a super-2 number, since 2×1222011101111² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222011101191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611005550555 + 611005550556.

It is an arithmetic number, because the mean of its divisors is an integer number (611005550556).

Almost surely, 2^{1222011101111} is an apocalyptic number.

1222011101111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222011101111 is an equidigital number, since it uses as much as digits as its factorization.

1222011101111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1222011101111 its reverse (1111011102221), we get a palindrome (2333022203332).

It can be divided in two parts, 122201110 and 1111, that added together give a palindrome (122202221).

The spelling of 1222011101111 in words is "one trillion, two hundred twenty-two billion, eleven million, one hundred one thousand, one hundred eleven".