20111444103 has 8 divisors (see below), whose sum is σ = 26975829888. Its totient is φ = 13327343864.

The previous prime is 20111444081. The next prime is 20111444123. The reversal of 20111444103 is 30144411102.

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

It is a cyclic number.

It is not a de Polignac number, because 20111444103 - 2⁹ = 20111443591 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20111444103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111444123) 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 7 ways as a sum of consecutive naturals, for example, 20070801 + ... + 20071802.

It is an arithmetic number, because the mean of its divisors is an integer number (3371978736).

Almost surely, 2^20111444103 is an apocalyptic number.

20111444103 is a deficient number, since it is larger than the sum of its proper divisors (6864385785).

20111444103 is a wasteful number, since it uses less digits than its factorization.

20111444103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40142773.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 20111444103 its reverse (30144411102), we get a palindrome (50255855205).

The spelling of 20111444103 in words is "twenty billion, one hundred eleven million, four hundred forty-four thousand, one hundred three".