11223412321 has 4 divisors (see below), whose sum is σ = 12243722544. Its totient is φ = 10203102100.

The previous prime is 11223412313. The next prime is 11223412331. The reversal of 11223412321 is 12321432211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12321432211 = 11 ⋅1120130201.

It is a cyclic number.

It is not a de Polignac number, because 11223412321 - 2³ = 11223412313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11223412292 and 11223412301.

It is not an unprimeable number, because it can be changed into a prime (11223412331) 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, 510155095 + ... + 510155116.

It is an arithmetic number, because the mean of its divisors is an integer number (3060930636).

Almost surely, 2^11223412321 is an apocalyptic number.

11223412321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11223412321 is a deficient number, since it is larger than the sum of its proper divisors (1020310223).

11223412321 is a wasteful number, since it uses less digits than its factorization.

11223412321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020310222.

The product of its digits is 576, while the sum is 22.

Adding to 11223412321 its reverse (12321432211), we get a palindrome (23544844532).

The spelling of 11223412321 in words is "eleven billion, two hundred twenty-three million, four hundred twelve thousand, three hundred twenty-one".