11313111211021 has 4 divisors (see below), whose sum is σ = 11339359729344. Its totient is φ = 11286862692700.

The previous prime is 11313111211007. The next prime is 11313111211043. The reversal of 11313111211021 is 12011211131311.

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 not a de Polignac number, because 11313111211021 - 2³¹ = 11310963727373 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11313111211021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11313111011021) 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, 13124258515 + ... + 13124259376.

It is an arithmetic number, because the mean of its divisors is an integer number (2834839932336).

Almost surely, 2^{11313111211021} is an apocalyptic number.

It is an amenable number.

11313111211021 is a deficient number, since it is larger than the sum of its proper divisors (26248518323).

11313111211021 is an equidigital number, since it uses as much as digits as its factorization.

11313111211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26248518322.

The product of its (nonzero) digits is 36, while the sum is 19.

Adding to 11313111211021 its reverse (12011211131311), we get a palindrome (23324322342332).

The spelling of 11313111211021 in words is "eleven trillion, three hundred thirteen billion, one hundred eleven million, two hundred eleven thousand, twenty-one".