120102012105 has 32 divisors (see below), whose sum is σ = 198759936000. Its totient is φ = 61863791040.

The previous prime is 120102012083. The next prime is 120102012157. The reversal of 120102012105 is 501210201021.

It is not a de Polignac number, because 120102012105 - 2⁷ = 120102011977 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, 26767 + ... + 490836.

It is an arithmetic number, because the mean of its divisors is an integer number (6211248000).

Almost surely, 2^120102012105 is an apocalyptic number.

120102012105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

120102012105 is a deficient number, since it is larger than the sum of its proper divisors (78657923895).

120102012105 is a wasteful number, since it uses less digits than its factorization.

120102012105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518141.

The product of its (nonzero) digits is 40, while the sum is 15.

Adding to 120102012105 its reverse (501210201021), we get a palindrome (621312213126).

The spelling of 120102012105 in words is "one hundred twenty billion, one hundred two million, twelve thousand, one hundred five".