20224131113 has 4 divisors (see below), whose sum is σ = 20555674308. Its totient is φ = 19892587920.

The previous prime is 20224131023. The next prime is 20224131121. The reversal of 20224131113 is 31113142202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31113142202 = 2 ⋅15556571101.

It can be written as a sum of positive squares in 2 ways, for example, as 2287421929 + 17936709184 = 47827^2 + 133928^2 .

It is a cyclic number.

It is not a de Polignac number, because 20224131113 - 2¹⁰ = 20224130089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20224137113) 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, 165771506 + ... + 165771627.

It is an arithmetic number, because the mean of its divisors is an integer number (5138918577).

Almost surely, 2^20224131113 is an apocalyptic number.

It is an amenable number.

20224131113 is a deficient number, since it is larger than the sum of its proper divisors (331543195).

20224131113 is an equidigital number, since it uses as much as digits as its factorization.

20224131113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331543194.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 20224131113 its reverse (31113142202), we get a palindrome (51337273315).

The spelling of 20224131113 in words is "twenty billion, two hundred twenty-four million, one hundred thirty-one thousand, one hundred thirteen".