11123012 has 6 divisors (see below), whose sum is σ = 19465278. Its totient is φ = 5561504.

The previous prime is 11123011. The next prime is 11123023. The reversal of 11123012 is 21032111.

It can be written as a sum of positive squares in only one way, i.e., 6895876 + 4227136 = 2626^2 + 2056^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11122984 and 11123002.

It is not an unprimeable number, because it can be changed into a prime (11123011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1390373 + ... + 1390380.

It is an arithmetic number, because the mean of its divisors is an integer number (3244213).

Almost surely, 2^11123012 is an apocalyptic number.

It is an amenable number.

11123012 is a deficient number, since it is larger than the sum of its proper divisors (8342266).

11123012 is a wasteful number, since it uses less digits than its factorization.

11123012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2780757 (or 2780755 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 11123012 is about 3335.1179889173. The cubic root of 11123012 is about 223.2239567388.

Adding to 11123012 its reverse (21032111), we get a palindrome (32155123).

Subtracting 11123012 from its reverse (21032111), we obtain a palindrome (9909099).

The spelling of 11123012 in words is "eleven million, one hundred twenty-three thousand, twelve".