20113115223 has 16 divisors (see below), whose sum is σ = 27213843456. Its totient is φ = 13210824480.

The previous prime is 20113115219. The next prime is 20113115333. The reversal of 20113115223 is 32251131102.

It is not a de Polignac number, because 20113115223 - 2² = 20113115219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20113115223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20113115203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 286386 + ... + 349632.

It is an arithmetic number, because the mean of its divisors is an integer number (1700865216).

Almost surely, 2^20113115223 is an apocalyptic number.

20113115223 is a deficient number, since it is larger than the sum of its proper divisors (7100728233).

20113115223 is a wasteful number, since it uses less digits than its factorization.

20113115223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64814.

The product of its (nonzero) digits is 360, while the sum is 21.

Adding to 20113115223 its reverse (32251131102), we get a palindrome (52364246325).

The spelling of 20113115223 in words is "twenty billion, one hundred thirteen million, one hundred fifteen thousand, two hundred twenty-three".