1021100100218 has 32 divisors (see below), whose sum is σ = 1707440297472. Its totient is φ = 454092433200.

The previous prime is 1021100100217. The next prime is 1021100100289. The reversal of 1021100100218 is 8120010011201.

It is a junction number, because it is equal to n+sod(n) for n = 1021100100196 and 1021100100205.

It is not an unprimeable number, because it can be changed into a prime (1021100100217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2526488 + ... + 2902643.

It is an arithmetic number, because the mean of its divisors is an integer number (53357509296).

Almost surely, 2^{1021100100218} is an apocalyptic number.

1021100100218 is a deficient number, since it is larger than the sum of its proper divisors (686340197254).

1021100100218 is a wasteful number, since it uses less digits than its factorization.

1021100100218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5429330.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 1021100100218 its reverse (8120010011201), we get a palindrome (9141110111419).

The spelling of 1021100100218 in words is "one trillion, twenty-one billion, one hundred million, one hundred thousand, two hundred eighteen".