11021221323 has 12 divisors (see below), whose sum is σ = 18193762288. Its totient is φ = 6297840720.

The previous prime is 11021221273. The next prime is 11021221331. The reversal of 11021221323 is 32312212011.

11021221323 is a `hidden beast` number, since 110 + 212 + 21 + 323 = 666.

It is not a de Polignac number, because 11021221323 - 2¹⁶ = 11021155787 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11021221296 and 11021221305.

It is not an unprimeable number, because it can be changed into a prime (11021221373) 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 11 ways as a sum of consecutive naturals, for example, 87469948 + ... + 87470073.

Almost surely, 2^11021221323 is an apocalyptic number.

11021221323 is a deficient number, since it is larger than the sum of its proper divisors (7172540965).

11021221323 is a wasteful number, since it uses less digits than its factorization.

11021221323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174940034 (or 174940031 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 11021221323 its reverse (32312212011), we get a palindrome (43333433334).

The spelling of 11021221323 in words is "eleven billion, twenty-one million, two hundred twenty-one thousand, three hundred twenty-three".