20440224213 has 8 divisors (see below), whose sum is σ = 27257285088. Its totient is φ = 13624989744.

The previous prime is 20440224197. The next prime is 20440224221. The reversal of 20440224213 is 31242204402.

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

It is not a de Polignac number, because 20440224213 - 2⁴ = 20440224197 is a prime.

It is a super-2 number, since 2×20440224213² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20440223213) 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, 430270 + ... + 475407.

It is an arithmetic number, because the mean of its divisors is an integer number (3407160636).

Almost surely, 2^20440224213 is an apocalyptic number.

It is an amenable number.

20440224213 is a deficient number, since it is larger than the sum of its proper divisors (6817060875).

20440224213 is an equidigital number, since it uses as much as digits as its factorization.

20440224213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913203.

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 20440224213 its reverse (31242204402), we get a palindrome (51682428615).

The spelling of 20440224213 in words is "twenty billion, four hundred forty million, two hundred twenty-four thousand, two hundred thirteen".