11331211231001 has 4 divisors (see below), whose sum is σ = 11412730736400. Its totient is φ = 11249691725604.

The previous prime is 11331211230967. The next prime is 11331211231031. The reversal of 11331211231001 is 10013211213311.

11331211231001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11331211231001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11331211231031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40759752491 + ... + 40759752768.

It is an arithmetic number, because the mean of its divisors is an integer number (2853182684100).

Almost surely, 2^{11331211231001} is an apocalyptic number.

It is an amenable number.

11331211231001 is a deficient number, since it is larger than the sum of its proper divisors (81519505399).

11331211231001 is an equidigital number, since it uses as much as digits as its factorization.

11331211231001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81519505398.

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 11331211231001 its reverse (10013211213311), we get a palindrome (21344422444312).

The spelling of 11331211231001 in words is "eleven trillion, three hundred thirty-one billion, two hundred eleven million, two hundred thirty-one thousand, one".