20111422430213 has 4 divisors (see below), whose sum is σ = 20111432325228. Its totient is φ = 20111412535200.

The previous prime is 20111422430147. The next prime is 20111422430227. The reversal of 20111422430213 is 31203422411102.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 6989800055329 + 13121622374884 = 2643823^2 + 3622378^2 .

It is a cyclic number.

It is not a de Polignac number, because 20111422430213 - 2¹⁸ = 20111422168069 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 (20111422430513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 660638 + ... + 6376463.

It is an arithmetic number, because the mean of its divisors is an integer number (5027858081307).

Almost surely, 2^{20111422430213} is an apocalyptic number.

It is an amenable number.

20111422430213 is a deficient number, since it is larger than the sum of its proper divisors (9895015).

20111422430213 is an equidigital number, since it uses as much as digits as its factorization.

20111422430213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9895014.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 20111422430213 its reverse (31203422411102), we get a palindrome (51314844841315).

The spelling of 20111422430213 in words is "twenty trillion, one hundred eleven billion, four hundred twenty-two million, four hundred thirty thousand, two hundred thirteen".