11140240221 has 36 divisors (see below), whose sum is σ = 17911333440. Its totient is φ = 6666145200.

The previous prime is 11140240219. The next prime is 11140240249. The reversal of 11140240221 is 12204204111.

11140240221 is a `hidden beast` number, since 1 + 1 + 1 + 402 + 40 + 221 = 666.

It is not a de Polignac number, because 11140240221 - 2¹ = 11140240219 is a prime.

It is a super-2 number, since 2×11140240221² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11140240194 and 11140240203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11140240211) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 21286 + ... + 150776.

It is an arithmetic number, because the mean of its divisors is an integer number (497537040).

Almost surely, 2^11140240221 is an apocalyptic number.

11140240221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11140240221 is a deficient number, since it is larger than the sum of its proper divisors (6771093219).

11140240221 is a wasteful number, since it uses less digits than its factorization.

11140240221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129598 (or 129584 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 11140240221 its reverse (12204204111), we get a palindrome (23344444332).

The spelling of 11140240221 in words is "eleven billion, one hundred forty million, two hundred forty thousand, two hundred twenty-one".