11222344221 has 16 divisors (see below), whose sum is σ = 16326862848. Its totient is φ = 6799982000.

The previous prime is 11222344187. The next prime is 11222344241. The reversal of 11222344221 is 12244322211.

It is a cyclic number.

It is not a de Polignac number, because 11222344221 - 2²¹ = 11220247069 is a prime.

It is a super-2 number, since 2×11222344221² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11222344191 and 11222344200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11222344241) 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, 134446 + ... + 201296.

It is an arithmetic number, because the mean of its divisors is an integer number (1020428928).

Almost surely, 2^11222344221 is an apocalyptic number.

11222344221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11222344221 is a deficient number, since it is larger than the sum of its proper divisors (5104518627).

11222344221 is a wasteful number, since it uses less digits than its factorization.

11222344221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71952.

The product of its digits is 1536, while the sum is 24.

Adding to 11222344221 its reverse (12244322211), we get a palindrome (23466666432).

The spelling of 11222344221 in words is "eleven billion, two hundred twenty-two million, three hundred forty-four thousand, two hundred twenty-one".