11123021204 has 6 divisors (see below), whose sum is σ = 19465287114. Its totient is φ = 5561510600.

The previous prime is 11123021177. The next prime is 11123021209. The reversal of 11123021204 is 40212032111.

It can be written as a sum of positive squares in only one way, i.e., 10870147600 + 252873604 = 104260^2 + 15902^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11123021209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1390377647 + ... + 1390377654.

It is an arithmetic number, because the mean of its divisors is an integer number (3244214519).

Almost surely, 2^11123021204 is an apocalyptic number.

It is an amenable number.

11123021204 is a deficient number, since it is larger than the sum of its proper divisors (8342265910).

11123021204 is a wasteful number, since it uses less digits than its factorization.

11123021204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2780755305 (or 2780755303 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 11123021204 its reverse (40212032111), we get a palindrome (51335053315).

The spelling of 11123021204 in words is "eleven billion, one hundred twenty-three million, twenty-one thousand, two hundred four".