11222221222011 has 8 divisors (see below), whose sum is σ = 14965609495104. Its totient is φ = 7480156881800.

The previous prime is 11222221221961. The next prime is 11222221222061. The reversal of 11222221222011 is 11022212222211.

It is an interprime number because it is at equal distance from previous prime (11222221221961) and next prime (11222221222061).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11222221222011 - 2⁹ = 11222221221499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11222221222061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 330963441 + ... + 330997346.

It is an arithmetic number, because the mean of its divisors is an integer number (1870701186888).

Almost surely, 2^{11222221222011} is an apocalyptic number.

11222221222011 is a deficient number, since it is larger than the sum of its proper divisors (3743388273093).

11222221222011 is an equidigital number, since it uses as much as digits as its factorization.

11222221222011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661966441.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 11222221222011 its reverse (11022212222211), we get a palindrome (22244433444222).

The spelling of 11222221222011 in words is "eleven trillion, two hundred twenty-two billion, two hundred twenty-one million, two hundred twenty-two thousand, eleven".