1223113311211 has 4 divisors (see below), whose sum is σ = 1334305430424. Its totient is φ = 1111921192000.

The previous prime is 1223113311151. The next prime is 1223113311227. The reversal of 1223113311211 is 1121133113221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1223113311211 - 2¹³ = 1223113303019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1223113311281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55596059590 + ... + 55596059611.

It is an arithmetic number, because the mean of its divisors is an integer number (333576357606).

Almost surely, 2^{1223113311211} is an apocalyptic number.

1223113311211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1223113311211 is a deficient number, since it is larger than the sum of its proper divisors (111192119213).

1223113311211 is a wasteful number, since it uses less digits than its factorization.

1223113311211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111192119212.

The product of its digits is 216, while the sum is 22.

Adding to 1223113311211 its reverse (1121133113221), we get a palindrome (2344246424432).

The spelling of 1223113311211 in words is "one trillion, two hundred twenty-three billion, one hundred thirteen million, three hundred eleven thousand, two hundred eleven".