11110201221 has 16 divisors (see below), whose sum is σ = 17665910784. Its totient is φ = 6072656304.

The previous prime is 11110201171. The next prime is 11110201273. The reversal of 11110201221 is 12210201111.

It is not a de Polignac number, because 11110201221 - 2⁹ = 11110200709 is a prime.

It is a super-2 number, since 2×11110201221² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11110201197 and 11110201206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11110200221) 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, 11500761 + ... + 11501726.

It is an arithmetic number, because the mean of its divisors is an integer number (1104119424).

Almost surely, 2^11110201221 is an apocalyptic number.

It is an amenable number.

11110201221 is a deficient number, since it is larger than the sum of its proper divisors (6555709563).

11110201221 is a wasteful number, since it uses less digits than its factorization.

11110201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23002520.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 11110201221 its reverse (12210201111), we get a palindrome (23320402332).

The spelling of 11110201221 in words is "eleven billion, one hundred ten million, two hundred one thousand, two hundred twenty-one".