11430331221 has 16 divisors (see below), whose sum is σ = 15339706560. Its totient is φ = 7570667520.

The previous prime is 11430331207. The next prime is 11430331291. The reversal of 11430331221 is 12213303411.

It is not a de Polignac number, because 11430331221 - 2¹³ = 11430323029 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11430331291) 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, 609931 + ... + 628391.

It is an arithmetic number, because the mean of its divisors is an integer number (958731660).

Almost surely, 2^11430331221 is an apocalyptic number.

It is an amenable number.

11430331221 is a deficient number, since it is larger than the sum of its proper divisors (3909375339).

11430331221 is a wasteful number, since it uses less digits than its factorization.

11430331221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19796.

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

Adding to 11430331221 its reverse (12213303411), we get a palindrome (23643634632).

The spelling of 11430331221 in words is "eleven billion, four hundred thirty million, three hundred thirty-one thousand, two hundred twenty-one".