1222100222011 has 2 divisors, whose sum is σ = 1222100222012. Its totient is φ = 1222100222010.

The previous prime is 1222100221999. The next prime is 1222100222027. The reversal of 1222100222011 is 1102220012221.

It is a happy number.

It is an a-pointer prime, because the next prime (1222100222027) can be obtained adding 1222100222011 to its sum of digits (16).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1222100222011 - 2³⁹ = 672344408123 is a prime.

It is not a weakly prime, because it can be changed into another prime (1222100222311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611050111005 + 611050111006.

It is an arithmetic number, because the mean of its divisors is an integer number (611050111006).

Almost surely, 2^{1222100222011} is an apocalyptic number.

1222100222011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222100222011 is an equidigital number, since it uses as much as digits as its factorization.

1222100222011 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 16.

Adding to 1222100222011 its reverse (1102220012221), we get a palindrome (2324320234232).

The spelling of 1222100222011 in words is "one trillion, two hundred twenty-two billion, one hundred million, two hundred twenty-two thousand, eleven".