11301312021 has 4 divisors (see below), whose sum is σ = 15068416032. Its totient is φ = 7534208012.

The previous prime is 11301311939. The next prime is 11301312031. The reversal of 11301312021 is 12021310311.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12021310311 = 3 ⋅4007103437.

It is a cyclic number.

It is not a de Polignac number, because 11301312021 - 2⁷ = 11301311893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11301312031) 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, 1883552001 + ... + 1883552006.

It is an arithmetic number, because the mean of its divisors is an integer number (3767104008).

Almost surely, 2^11301312021 is an apocalyptic number.

It is an amenable number.

11301312021 is a deficient number, since it is larger than the sum of its proper divisors (3767104011).

11301312021 is an equidigital number, since it uses as much as digits as its factorization.

11301312021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3767104010.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 11301312021 its reverse (12021310311), we get a palindrome (23322622332).

The spelling of 11301312021 in words is "eleven billion, three hundred one million, three hundred twelve thousand, twenty-one".