20120013105 has 32 divisors (see below), whose sum is σ = 32486572800. Its totient is φ = 10632840960.

The previous prime is 20120013091. The next prime is 20120013127. The reversal of 20120013105 is 50131002102.

It is not a de Polignac number, because 20120013105 - 2⁵ = 20120013073 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, 930244 + ... + 951626.

It is an arithmetic number, because the mean of its divisors is an integer number (1015205400).

Almost surely, 2^20120013105 is an apocalyptic number.

It is an amenable number.

20120013105 is a deficient number, since it is larger than the sum of its proper divisors (12366559695).

20120013105 is a wasteful number, since it uses less digits than its factorization.

20120013105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21961.

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

Adding to 20120013105 its reverse (50131002102), we get a palindrome (70251015207).

The spelling of 20120013105 in words is "twenty billion, one hundred twenty million, thirteen thousand, one hundred five".