10102100018 has 4 divisors (see below), whose sum is σ = 15153150030. Its totient is φ = 5051050008.

The previous prime is 10102100011. The next prime is 10102100051. The reversal of 10102100018 is 81000120101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 9905623729 + 196476289 = 99527^2 + 14017^2 .

It is a junction number, because it is equal to n+sod(n) for n = 10102099975 and 10102100011.

It is not an unprimeable number, because it can be changed into a prime (10102100011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2525525003 + ... + 2525525006.

Almost surely, 2^10102100018 is an apocalyptic number.

10102100018 is a deficient number, since it is larger than the sum of its proper divisors (5051050012).

10102100018 is an equidigital number, since it uses as much as digits as its factorization.

10102100018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5051050011.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 10102100018 its reverse (81000120101), we get a palindrome (91102220119).

The spelling of 10102100018 in words is "ten billion, one hundred two million, one hundred thousand, eighteen".