102102012105 has 16 divisors (see below), whose sum is σ = 163398470400. Its totient is φ = 54442656128.

The previous prime is 102102012079. The next prime is 102102012149. The reversal of 102102012105 is 501210201201.

It is a cyclic number.

It is not a de Polignac number, because 102102012105 - 2⁹ = 102102011593 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 15 ways as a sum of consecutive naturals, for example, 662337 + ... + 801806.

It is an arithmetic number, because the mean of its divisors is an integer number (10212404400).

Almost surely, 2^102102012105 is an apocalyptic number.

102102012105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

102102012105 is a deficient number, since it is larger than the sum of its proper divisors (61296458295).

102102012105 is a wasteful number, since it uses less digits than its factorization.

102102012105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1468800.

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

Adding to 102102012105 its reverse (501210201201), we get a palindrome (603312213306).

The spelling of 102102012105 in words is "one hundred two billion, one hundred two million, twelve thousand, one hundred five".