1111321001 has 16 divisors (see below), whose sum is σ = 1340098560. Its totient is φ = 900285840.

The previous prime is 1111320983. The next prime is 1111321007. The reversal of 1111321001 is 1001231111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1111321001 - 2²² = 1107126697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1111321007) 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, 47630 + ... + 67016.

It is an arithmetic number, because the mean of its divisors is an integer number (83756160).

Almost surely, 2^1111321001 is an apocalyptic number.

It is an amenable number.

1111321001 is a deficient number, since it is larger than the sum of its proper divisors (228777559).

1111321001 is a wasteful number, since it uses less digits than its factorization.

1111321001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19844.

The product of its (nonzero) digits is 6, while the sum is 11.

The square root of 1111321001 is about 33336.4815329992. The cubic root of 1111321001 is about 1035.8093822137.

Adding to 1111321001 its reverse (1001231111), we get a palindrome (2112552112).

The spelling of 1111321001 in words is "one billion, one hundred eleven million, three hundred twenty-one thousand, one".