11531122001 has 8 divisors (see below), whose sum is σ = 13189883904. Its totient is φ = 9875224800.

The previous prime is 11531121997. The next prime is 11531122019. The reversal of 11531122001 is 10022113511.

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

It is not a de Polignac number, because 11531122001 - 2² = 11531121997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11531122051) 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, 707540 + ... + 723653.

It is an arithmetic number, because the mean of its divisors is an integer number (1648735488).

Almost surely, 2^11531122001 is an apocalyptic number.

It is an amenable number.

11531122001 is a deficient number, since it is larger than the sum of its proper divisors (1658761903).

11531122001 is a wasteful number, since it uses less digits than its factorization.

11531122001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1432351.

The product of its (nonzero) digits is 60, while the sum is 17.

Adding to 11531122001 its reverse (10022113511), we get a palindrome (21553235512).

The spelling of 11531122001 in words is "eleven billion, five hundred thirty-one million, one hundred twenty-two thousand, one".