11123013331 has 4 divisors (see below), whose sum is σ = 11124974200. Its totient is φ = 11121052464.

The previous prime is 11123013329. The next prime is 11123013353. The reversal of 11123013331 is 13331032111.

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 11123013331 - 2¹ = 11123013329 is a prime.

It is a super-2 number, since 2×11123013331² (a number of 21 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 = 11123013299 and 11123013308.

It is not an unprimeable number, because it can be changed into a prime (11123013361) 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, 971901 + ... + 983278.

It is an arithmetic number, because the mean of its divisors is an integer number (2781243550).

Almost surely, 2^11123013331 is an apocalyptic number.

11123013331 is a deficient number, since it is larger than the sum of its proper divisors (1960869).

11123013331 is an equidigital number, since it uses as much as digits as its factorization.

11123013331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1960868.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 11123013331 its reverse (13331032111), we get a palindrome (24454045442).

The spelling of 11123013331 in words is "eleven billion, one hundred twenty-three million, thirteen thousand, three hundred thirty-one".