11442221001 has 16 divisors (see below), whose sum is σ = 17364889920. Its totient is φ = 7442094240.

The previous prime is 11442220997. The next prime is 11442221027. The reversal of 11442221001 is 10012224411.

11442221001 is a `hidden beast` number, since 1 + 1 + 442 + 221 + 0 + 0 + 1 = 666.

It is not a de Polignac number, because 11442221001 - 2² = 11442220997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11442221051) 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, 5167015 + ... + 5169228.

It is an arithmetic number, because the mean of its divisors is an integer number (1085305620).

Almost surely, 2^11442221001 is an apocalyptic number.

It is an amenable number.

11442221001 is a deficient number, since it is larger than the sum of its proper divisors (5922668919).

11442221001 is a wasteful number, since it uses less digits than its factorization.

11442221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10336293 (or 10336287 counting only the distinct ones).

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

Adding to 11442221001 its reverse (10012224411), we get a palindrome (21454445412).

The spelling of 11442221001 in words is "eleven billion, four hundred forty-two million, two hundred twenty-one thousand, one".