11023211123 has 4 divisors (see below), whose sum is σ = 11025742008. Its totient is φ = 11020680240.

The previous prime is 11023211107. The next prime is 11023211153. The reversal of 11023211123 is 32111232011.

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 11023211123 - 2⁴ = 11023211107 is a prime.

It is a super-2 number, since 2×11023211123² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11023211153) 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, 1258898 + ... + 1267623.

It is an arithmetic number, because the mean of its divisors is an integer number (2756435502).

Almost surely, 2^11023211123 is an apocalyptic number.

11023211123 is a deficient number, since it is larger than the sum of its proper divisors (2530885).

11023211123 is an equidigital number, since it uses as much as digits as its factorization.

11023211123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2530884.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 11023211123 its reverse (32111232011), we get a palindrome (43134443134).

The spelling of 11023211123 in words is "eleven billion, twenty-three million, two hundred eleven thousand, one hundred twenty-three".