120102015105 has 12 divisors (see below), whose sum is σ = 208176826260. Its totient is φ = 64054408032.

The previous prime is 120102015097. The next prime is 120102015107. The reversal of 120102015105 is 501510201021.

120102015105 is a `hidden beast` number, since 120 + 10 + 20 + 1 + 510 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 77326261776 + 42775753329 = 278076^2 + 206823^2 .

It is not a de Polignac number, because 120102015105 - 2³ = 120102015097 is a prime.

It is a super-2 number, since 2×120102015105² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (120102015107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1334466790 + ... + 1334466879.

It is an arithmetic number, because the mean of its divisors is an integer number (17348068855).

Almost surely, 2^120102015105 is an apocalyptic number.

120102015105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

120102015105 is a deficient number, since it is larger than the sum of its proper divisors (88074811155).

120102015105 is a wasteful number, since it uses less digits than its factorization.

120102015105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2668933680 (or 2668933677 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

Adding to 120102015105 its reverse (501510201021), we get a palindrome (621612216126).

The spelling of 120102015105 in words is "one hundred twenty billion, one hundred two million, fifteen thousand, one hundred five".