11222211321 has 12 divisors (see below), whose sum is σ = 16313110372. Its totient is φ = 7433820576.

The previous prime is 11222211283. The next prime is 11222211347. The reversal of 11222211321 is 12311222211.

11222211321 is a `hidden beast` number, since 1 + 122 + 221 + 1 + 321 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2461251321 + 8760960000 = 49611^2 + 93600^2 .

It is not a de Polignac number, because 11222211321 - 2⁶ = 11222211257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11222211294 and 11222211303.

It is not an unprimeable number, because it can be changed into a prime (11222218321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3969646 + ... + 3972471.

Almost surely, 2^11222211321 is an apocalyptic number.

It is an amenable number.

11222211321 is a deficient number, since it is larger than the sum of its proper divisors (5090899051).

11222211321 is a wasteful number, since it uses less digits than its factorization.

11222211321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7942280 (or 7942277 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

Adding to 11222211321 its reverse (12311222211), we get a palindrome (23533433532).

The spelling of 11222211321 in words is "eleven billion, two hundred twenty-two million, two hundred eleven thousand, three hundred twenty-one".