20120010112105 has 8 divisors (see below), whose sum is σ = 24212408771592. Its totient is φ = 16050410331648.

The previous prime is 20120010112093. The next prime is 20120010112133. The reversal of 20120010112105 is 50121101002102.

It can be written as a sum of positive squares in 4 ways, for example, as 158916241449 + 19961093870656 = 398643^2 + 4467784^2 .

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 20120010112105 - 2¹³ = 20120010103913 is a prime.

It is a super-2 number, since 2×20120010112105² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5699717814 + ... + 5699721343.

It is an arithmetic number, because the mean of its divisors is an integer number (3026551096449).

Almost surely, 2^{20120010112105} is an apocalyptic number.

It is an amenable number.

20120010112105 is a deficient number, since it is larger than the sum of its proper divisors (4092398659487).

20120010112105 is a wasteful number, since it uses less digits than its factorization.

20120010112105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11399439515.

The product of its (nonzero) digits is 40, while the sum is 16.

Adding to 20120010112105 its reverse (50121101002102), we get a palindrome (70241111114207).

The spelling of 20120010112105 in words is "twenty trillion, one hundred twenty billion, ten million, one hundred twelve thousand, one hundred five".