11024201221 has 12 divisors (see below), whose sum is σ = 12180978432. Its totient is φ = 9969509000.

The previous prime is 11024201219. The next prime is 11024201257. The reversal of 11024201221 is 12210242011.

It is not a de Polignac number, because 11024201221 - 2¹ = 11024201219 is a prime.

It is a super-2 number, since 2×11024201221² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11024201195 and 11024201204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11024201291) 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, 215395 + ... + 261616.

It is an arithmetic number, because the mean of its divisors is an integer number (1015081536).

Almost surely, 2^11024201221 is an apocalyptic number.

11024201221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11024201221 is a deficient number, since it is larger than the sum of its proper divisors (1156777211).

11024201221 is a wasteful number, since it uses less digits than its factorization.

11024201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477224 (or 477213 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 11024201221 its reverse (12210242011), we get a palindrome (23234443232).

The spelling of 11024201221 in words is "eleven billion, twenty-four million, two hundred one thousand, two hundred twenty-one".