11001131001 has 48 divisors (see below), whose sum is σ = 19460697984. Its totient is φ = 5845243392.

The previous prime is 11001130979. The next prime is 11001131003. The reversal of 11001131001 is 10013110011.

It is not a de Polignac number, because 11001131001 - 2⁷ = 11001130873 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (11001131003) 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, 27015 + ... + 150771.

It is an arithmetic number, because the mean of its divisors is an integer number (405431208).

Almost surely, 2^11001131001 is an apocalyptic number.

It is an amenable number.

11001131001 is a deficient number, since it is larger than the sum of its proper divisors (8459566983).

11001131001 is a wasteful number, since it uses less digits than its factorization.

11001131001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123870 (or 123867 counting only the distinct ones).

The product of its (nonzero) digits is 3, while the sum is 9.

Adding to 11001131001 its reverse (10013110011), we get a palindrome (21014241012).

The spelling of 11001131001 in words is "eleven billion, one million, one hundred thirty-one thousand, one".