1123211011223 has 16 divisors (see below), whose sum is σ = 1297116522240. Its totient is φ = 952712326656.

The previous prime is 1123211011207. The next prime is 1123211011243. The reversal of 1123211011223 is 3221101123211.

It is a cyclic number.

It is not a de Polignac number, because 1123211011223 - 2⁴ = 1123211011207 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1123211011195 and 1123211011204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123211011243) 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, 1581386 + ... + 2178807.

It is an arithmetic number, because the mean of its divisors is an integer number (81069782640).

Almost surely, 2^{1123211011223} is an apocalyptic number.

1123211011223 is a deficient number, since it is larger than the sum of its proper divisors (173905511017).

1123211011223 is a wasteful number, since it uses less digits than its factorization.

1123211011223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3760646.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 1123211011223 its reverse (3221101123211), we get a palindrome (4344312134434).

The spelling of 1123211011223 in words is "one trillion, one hundred twenty-three billion, two hundred eleven million, eleven thousand, two hundred twenty-three".