11301121220021 has 4 divisors (see below), whose sum is σ = 11312082541344. Its totient is φ = 11290159898700.

The previous prime is 11301121220003. The next prime is 11301121220023. The reversal of 11301121220021 is 12002212110311.

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.

It is a cyclic number.

It is not a de Polignac number, because 11301121220021 - 2³⁴ = 11283941350837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11301121220023) 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, 5480659115 + ... + 5480661176.

It is an arithmetic number, because the mean of its divisors is an integer number (2828020635336).

Almost surely, 2^{11301121220021} is an apocalyptic number.

It is an amenable number.

11301121220021 is a deficient number, since it is larger than the sum of its proper divisors (10961321323).

11301121220021 is a wasteful number, since it uses less digits than its factorization.

11301121220021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10961321322.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 11301121220021 its reverse (12002212110311), we get a palindrome (23303333330332).

The spelling of 11301121220021 in words is "eleven trillion, three hundred one billion, one hundred twenty-one million, two hundred twenty thousand, twenty-one".