11123223202031 has 4 divisors (see below), whose sum is σ = 11144491315752. Its totient is φ = 11101955088312.

The previous prime is 11123223201989. The next prime is 11123223202051. The reversal of 11123223202031 is 13020232232111.

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 11123223202031 - 2¹⁸ = 11123222939887 is a prime.

It is a super-2 number, since 2×11123223202031² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11123223201988 and 11123223202006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11123223202051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10634056076 + ... + 10634057121.

It is an arithmetic number, because the mean of its divisors is an integer number (2786122828938).

Almost surely, 2^{11123223202031} is an apocalyptic number.

11123223202031 is a deficient number, since it is larger than the sum of its proper divisors (21268113721).

11123223202031 is an equidigital number, since it uses as much as digits as its factorization.

11123223202031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21268113720.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 11123223202031 its reverse (13020232232111), we get a palindrome (24143455434142).

The spelling of 11123223202031 in words is "eleven trillion, one hundred twenty-three billion, two hundred twenty-three million, two hundred two thousand, thirty-one".