11033123421 has 16 divisors (see below), whose sum is σ = 15051749184. Its totient is φ = 7186840704.

The previous prime is 11033123407. The next prime is 11033123443. The reversal of 11033123421 is 12432133011.

It is not a de Polignac number, because 11033123421 - 2⁹ = 11033122909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11033123461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 211986 + ... + 258851.

It is an arithmetic number, because the mean of its divisors is an integer number (940734324).

Almost surely, 2^11033123421 is an apocalyptic number.

It is an amenable number.

11033123421 is a deficient number, since it is larger than the sum of its proper divisors (4018625763).

11033123421 is a wasteful number, since it uses less digits than its factorization.

11033123421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471020.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 11033123421 its reverse (12432133011), we get a palindrome (23465256432).

The spelling of 11033123421 in words is "eleven billion, thirty-three million, one hundred twenty-three thousand, four hundred twenty-one".