1222120222311 has 16 divisors (see below), whose sum is σ = 1654085320704. Its totient is φ = 802454953344.

The previous prime is 1222120222261. The next prime is 1222120222313. The reversal of 1222120222311 is 1132220212221.

It is not a de Polignac number, because 1222120222311 - 2⁹ = 1222120221799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222120222313) 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 15 ways as a sum of consecutive naturals, for example, 739855 + ... + 1729631.

It is an arithmetic number, because the mean of its divisors is an integer number (103380332544).

Almost surely, 2^{1222120222311} is an apocalyptic number.

1222120222311 is a deficient number, since it is larger than the sum of its proper divisors (431965098393).

1222120222311 is an equidigital number, since it uses as much as digits as its factorization.

1222120222311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995990.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 1222120222311 its reverse (1132220212221), we get a palindrome (2354340434532).

The spelling of 1222120222311 in words is "one trillion, two hundred twenty-two billion, one hundred twenty million, two hundred twenty-two thousand, three hundred eleven".