11041221001 has 16 divisors (see below), whose sum is σ = 11781544320. Its totient is φ = 10324575360.

The previous prime is 11041220987. The next prime is 11041221029. The reversal of 11041221001 is 10012214011.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11041221001 is a prime.

It is a super-2 number, since 2×11041221001² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

11041221001 is a modest number, since divided by 221001 gives 11041 as remainder.

It is not an unprimeable number, because it can be changed into a prime (11041221041) 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, 223141 + ... + 268093.

It is an arithmetic number, because the mean of its divisors is an integer number (736346520).

Almost surely, 2^11041221001 is an apocalyptic number.

It is an amenable number.

11041221001 is a deficient number, since it is larger than the sum of its proper divisors (740323319).

11041221001 is a wasteful number, since it uses less digits than its factorization.

11041221001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45216.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 11041221001 its reverse (10012214011), we get a palindrome (21053435012).

The spelling of 11041221001 in words is "eleven billion, forty-one million, two hundred twenty-one thousand, one".