1001002211218 has 4 divisors (see below), whose sum is σ = 1501503316830. Its totient is φ = 500501105608.

The previous prime is 1001002211201. The next prime is 1001002211219. The reversal of 1001002211218 is 8121122001001.

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., 974972583649 + 26029627569 = 987407^2 + 161337^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1001002211195 and 1001002211204.

It is not an unprimeable number, because it can be changed into a prime (1001002211219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250250552803 + ... + 250250552806.

Almost surely, 2^{1001002211218} is an apocalyptic number.

1001002211218 is a deficient number, since it is larger than the sum of its proper divisors (500501105612).

1001002211218 is an equidigital number, since it uses as much as digits as its factorization.

1001002211218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500501105611.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 1001002211218 its reverse (8121122001001), we get a palindrome (9122124212219).

The spelling of 1001002211218 in words is "one trillion, one billion, two million, two hundred eleven thousand, two hundred eighteen".