11321113312021 has 4 divisors (see below), whose sum is σ = 11379771930412. Its totient is φ = 11262454693632.

The previous prime is 11321113312013. The next prime is 11321113312039. The reversal of 11321113312021 is 12021331112311.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3931142909521 + 7389970402500 = 1982711^2 + 2718450^2 .

It is a cyclic number.

It is not a de Polignac number, because 11321113312021 - 2³ = 11321113312013 is a prime.

It is a super-2 number, since 2×11321113312021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11321113311983 and 11321113312001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11321113912021) 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, 29329308906 + ... + 29329309291.

It is an arithmetic number, because the mean of its divisors is an integer number (2844942982603).

Almost surely, 2^{11321113312021} is an apocalyptic number.

It is an amenable number.

11321113312021 is a deficient number, since it is larger than the sum of its proper divisors (58658618391).

11321113312021 is an equidigital number, since it uses as much as digits as its factorization.

11321113312021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58658618390.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 11321113312021 its reverse (12021331112311), we get a palindrome (23342444424332).

The spelling of 11321113312021 in words is "eleven trillion, three hundred twenty-one billion, one hundred thirteen million, three hundred twelve thousand, twenty-one".