13111223022021 has 8 divisors (see below), whose sum is σ = 17495854973280. Its totient is φ = 8733703209392.

The previous prime is 13111223022019. The next prime is 13111223022103. The reversal of 13111223022021 is 12022032211131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13111223022021 - 2¹ = 13111223022019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13111223022011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1778030355 + ... + 1778037728.

It is an arithmetic number, because the mean of its divisors is an integer number (2186981871660).

Almost surely, 2^{13111223022021} is an apocalyptic number.

It is an amenable number.

13111223022021 is a deficient number, since it is larger than the sum of its proper divisors (4384631951259).

13111223022021 is a wasteful number, since it uses less digits than its factorization.

13111223022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3556069315.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 13111223022021 its reverse (12022032211131), we get a palindrome (25133255233152).

The spelling of 13111223022021 in words is "thirteen trillion, one hundred eleven billion, two hundred twenty-three million, twenty-two thousand, twenty-one".