1001021111218 has 16 divisors (see below), whose sum is σ = 1539873007200. Its totient is φ = 487781957376.

The previous prime is 1001021111213. The next prime is 1001021111219. The reversal of 1001021111218 is 8121111201001.

It is a happy number.

1001021111218 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 1001021111195 and 1001021111204.

It is not an unprimeable number, because it can be changed into a prime (1001021111213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12923280 + ... + 13000507.

It is an arithmetic number, because the mean of its divisors is an integer number (96242062950).

Almost surely, 2^{1001021111218} is an apocalyptic number.

1001021111218 is a deficient number, since it is larger than the sum of its proper divisors (538851895982).

1001021111218 is a wasteful number, since it uses less digits than its factorization.

1001021111218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25924281.

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 1001021111218 its reverse (8121111201001), we get a palindrome (9122132312219).

The spelling of 1001021111218 in words is "one trillion, one billion, twenty-one million, one hundred eleven thousand, two hundred eighteen".