122220111311 has 2 divisors, whose sum is σ = 122220111312. Its totient is φ = 122220111310.

The previous prime is 122220111301. The next prime is 122220111323. The reversal of 122220111311 is 113111022221.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (113111022221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122220111311 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122220111311.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122220111301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61110055655 + 61110055656.

It is an arithmetic number, because the mean of its divisors is an integer number (61110055656).

Almost surely, 2^122220111311 is an apocalyptic number.

122220111311 is a deficient number, since it is larger than the sum of its proper divisors (1).

122220111311 is an equidigital number, since it uses as much as digits as its factorization.

122220111311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 122220111311 its reverse (113111022221), we get a palindrome (235331133532).

The spelling of 122220111311 in words is "one hundred twenty-two billion, two hundred twenty million, one hundred eleven thousand, three hundred eleven".