10100001218 has 4 divisors (see below), whose sum is σ = 15150001830. Its totient is φ = 5050000608.

The previous prime is 10100001217. The next prime is 10100001227. The reversal of 10100001218 is 81210000101.

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., 6977762089 + 3122239129 = 83533^2 + 55877^2 .

It is not an unprimeable number, because it can be changed into a prime (10100001211) 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, 2525000303 + ... + 2525000306.

Almost surely, 2^10100001218 is an apocalyptic number.

10100001218 is a deficient number, since it is larger than the sum of its proper divisors (5050000612).

10100001218 is an equidigital number, since it uses as much as digits as its factorization.

10100001218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5050000611.

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

Adding to 10100001218 its reverse (81210000101), we get a palindrome (91310001319).

The spelling of 10100001218 in words is "ten billion, one hundred million, one thousand, two hundred eighteen".