11101221441 has 24 divisors (see below), whose sum is σ = 16090303944. Its totient is φ = 7375380480.

The previous prime is 11101221433. The next prime is 11101221449. The reversal of 11101221441 is 14412210111.

11101221441 is a `hidden beast` number, since 1 + 1 + 1 + 0 + 1 + 221 + 441 = 666.

It is an interprime number because it is at equal distance from previous prime (11101221433) and next prime (11101221449).

It can be written as a sum of positive squares in 4 ways, for example, as 6822099216 + 4279122225 = 82596^2 + 65415^2 .

It is not a de Polignac number, because 11101221441 - 2³ = 11101221433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11101221449) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5333521 + ... + 5335601.

It is an arithmetic number, because the mean of its divisors is an integer number (670429331).

Almost surely, 2^11101221441 is an apocalyptic number.

It is an amenable number.

11101221441 is a deficient number, since it is larger than the sum of its proper divisors (4989082503).

11101221441 is a wasteful number, since it uses less digits than its factorization.

11101221441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3841 (or 3838 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 11101221441 its reverse (14412210111), we get a palindrome (25513431552).

The spelling of 11101221441 in words is "eleven billion, one hundred one million, two hundred twenty-one thousand, four hundred forty-one".