11021433423 has 128 divisors (see below), whose sum is σ = 20393662464. Its totient is φ = 5109350400.

The previous prime is 11021433413. The next prime is 11021433439. The reversal of 11021433423 is 32433412011.

It is a happy number.

It is not a de Polignac number, because 11021433423 - 2⁴ = 11021433407 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11021433393 and 11021433402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11021433413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 31222015 + ... + 31222367.

It is an arithmetic number, because the mean of its divisors is an integer number (159325488).

Almost surely, 2^11021433423 is an apocalyptic number.

11021433423 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11021433423 is a deficient number, since it is larger than the sum of its proper divisors (9372229041).

11021433423 is a wasteful number, since it uses less digits than its factorization.

11021433423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 11021433423 its reverse (32433412011), we get a palindrome (43454845434).

It can be divided in two parts, 11021 and 433423, that added together give a palindrome (444444).

The spelling of 11021433423 in words is "eleven billion, twenty-one million, four hundred thirty-three thousand, four hundred twenty-three".