20203223230011 has 16 divisors (see below), whose sum is σ = 28548340748928. Its totient is φ = 12664913001600.

The previous prime is 20203223229979. The next prime is 20203223230033. The reversal of 20203223230011 is 11003232230202.

It is a happy number.

It is not a de Polignac number, because 20203223230011 - 2⁵ = 20203223229979 is a prime.

It is a super-2 number, since 2×20203223230011² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20203223230011.

It is not an unprimeable number, because it can be changed into a prime (20203223230111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 181494145 + ... + 181605426.

It is an arithmetic number, because the mean of its divisors is an integer number (1784271296808).

Almost surely, 2^{20203223230011} is an apocalyptic number.

20203223230011 is a deficient number, since it is larger than the sum of its proper divisors (8345117518917).

20203223230011 is a wasteful number, since it uses less digits than its factorization.

20203223230011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363100682.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 20203223230011 its reverse (11003232230202), we get a palindrome (31206455460213).

The spelling of 20203223230011 in words is "twenty trillion, two hundred three billion, two hundred twenty-three million, two hundred thirty thousand, eleven".