12221122211011 has 16 divisors (see below), whose sum is σ = 14124310960320. Its totient is φ = 10357268359680.

The previous prime is 12221122211003. The next prime is 12221122211021. The reversal of 12221122211011 is 11011222112221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12221122211011 - 2³ = 12221122211003 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12221122211011.

It is not an unprimeable number, because it can be changed into a prime (12221122211021) 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, 24698071 + ... + 25188031.

It is an arithmetic number, because the mean of its divisors is an integer number (882769435020).

Almost surely, 2^{12221122211011} is an apocalyptic number.

12221122211011 is a deficient number, since it is larger than the sum of its proper divisors (1903188749309).

12221122211011 is an equidigital number, since it uses as much as digits as its factorization.

12221122211011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530094.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 12221122211011 its reverse (11011222112221), we get a palindrome (23232344323232).

The spelling of 12221122211011 in words is "twelve trillion, two hundred twenty-one billion, one hundred twenty-two million, two hundred eleven thousand, eleven".