11581227001 has 8 divisors (see below), whose sum is σ = 11908001160. Its totient is φ = 11258462592.

The previous prime is 11581226981. The next prime is 11581227013. The reversal of 11581227001 is 10072218511.

It can be written as a sum of positive squares in 4 ways, for example, as 3044390976 + 8536836025 = 55176^2 + 92395^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11581227001 - 2⁷ = 11581226873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11581227061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 996580 + ... + 1008133.

It is an arithmetic number, because the mean of its divisors is an integer number (1488500145).

Almost surely, 2^11581227001 is an apocalyptic number.

It is an amenable number.

11581227001 is a deficient number, since it is larger than the sum of its proper divisors (326774159).

11581227001 is a wasteful number, since it uses less digits than its factorization.

11581227001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2004875.

The product of its (nonzero) digits is 1120, while the sum is 28.

The spelling of 11581227001 in words is "eleven billion, five hundred eighty-one million, two hundred twenty-seven thousand, one".