11221024401 has 12 divisors (see below), whose sum is σ = 16311385012. Its totient is φ = 7433034336.

The previous prime is 11221024393. The next prime is 11221024457. The reversal of 11221024401 is 10442012211.

11221024401 is a `hidden beast` number, since 1 + 1 + 221 + 0 + 2 + 440 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6654643776 + 4566380625 = 81576^2 + 67575^2 .

It is not a de Polignac number, because 11221024401 - 2³ = 11221024393 is a prime.

It is a super-2 number, since 2×11221024401² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11221024901) 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, 3969226 + ... + 3972051.

Almost surely, 2^11221024401 is an apocalyptic number.

It is an amenable number.

11221024401 is a deficient number, since it is larger than the sum of its proper divisors (5090360611).

11221024401 is a wasteful number, since it uses less digits than its factorization.

11221024401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7941440 (or 7941437 counting only the distinct ones).

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

Adding to 11221024401 its reverse (10442012211), we get a palindrome (21663036612).

The spelling of 11221024401 in words is "eleven billion, two hundred twenty-one million, twenty-four thousand, four hundred one".