20203011105 has 32 divisors (see below), whose sum is σ = 32679139584. Its totient is φ = 10656976896.

The previous prime is 20203011079. The next prime is 20203011139. The reversal of 20203011105 is 50111030202.

It is not a de Polignac number, because 20203011105 - 2⁶ = 20203011041 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2896332 + ... + 2903298.

It is an arithmetic number, because the mean of its divisors is an integer number (1021223112).

Almost surely, 2^20203011105 is an apocalyptic number.

It is an amenable number.

20203011105 is a deficient number, since it is larger than the sum of its proper divisors (12476128479).

20203011105 is a wasteful number, since it uses less digits than its factorization.

20203011105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9065.

The product of its (nonzero) digits is 60, while the sum is 15.

Adding to 20203011105 its reverse (50111030202), we get a palindrome (70314041307).

The spelling of 20203011105 in words is "twenty billion, two hundred three million, eleven thousand, one hundred five".