1111221441 has 48 divisors (see below), whose sum is σ = 1849698240. Its totient is φ = 635765760.

The previous prime is 1111221413. The next prime is 1111221451. The reversal of 1111221441 is 1441221111.

1111221441 is a `hidden beast` number, since 1 + 1 + 1 + 1 + 221 + 441 = 666.

It is not a de Polignac number, because 1111221441 - 2⁷ = 1111221313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1111221451) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 633021 + ... + 634773.

It is an arithmetic number, because the mean of its divisors is an integer number (38535380).

Almost surely, 2^1111221441 is an apocalyptic number.

1111221441 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1111221441 is a deficient number, since it is larger than the sum of its proper divisors (738476799).

1111221441 is a wasteful number, since it uses less digits than its factorization.

1111221441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2126 (or 2123 counting only the distinct ones).

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

The square root of 1111221441 is about 33334.9882405859. The cubic root of 1111221441 is about 1035.7784495784.

Adding to 1111221441 its reverse (1441221111), we get a palindrome (2552442552).

The spelling of 1111221441 in words is "one billion, one hundred eleven million, two hundred twenty-one thousand, four hundred forty-one".