1222011011111 has 16 divisors (see below), whose sum is σ = 1348482816000. Its totient is φ = 1098109953600.

The previous prime is 1222011011093. The next prime is 1222011011129. The reversal of 1222011011111 is 1111101102221.

It is an interprime number because it is at equal distance from previous prime (1222011011093) and next prime (1222011011129).

It is a de Polignac number, because none of the positive numbers 2^k-1222011011111 is a prime.

It is a super-2 number, since 2×1222011011111² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222011011131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3135740 + ... + 3503838.

It is an arithmetic number, because the mean of its divisors is an integer number (84280176000).

Almost surely, 2^{1222011011111} is an apocalyptic number.

1222011011111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1222011011111 is a deficient number, since it is larger than the sum of its proper divisors (126471804889).

1222011011111 is a wasteful number, since it uses less digits than its factorization.

1222011011111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371590.

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

Adding to 1222011011111 its reverse (1111101102221), we get a palindrome (2333112113332).

The spelling of 1222011011111 in words is "one trillion, two hundred twenty-two billion, eleven million, eleven thousand, one hundred eleven".