21200101002218 has 16 divisors (see below), whose sum is σ = 33076542723840. Its totient is φ = 10179807175200.

The previous prime is 21200101002211. The next prime is 21200101002317. The reversal of 21200101002218 is 81220010100212.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 21200101002218.

It is not an unprimeable number, because it can be changed into a prime (21200101002211) 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, 1305095363 + ... + 1305111606.

It is an arithmetic number, because the mean of its divisors is an integer number (2067283920240).

Almost surely, 2^{21200101002218} is an apocalyptic number.

21200101002218 is a deficient number, since it is larger than the sum of its proper divisors (11876441721622).

21200101002218 is a wasteful number, since it uses less digits than its factorization.

21200101002218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2610207133.

The product of its (nonzero) digits is 128, while the sum is 20.

The spelling of 21200101002218 in words is "twenty-one trillion, two hundred billion, one hundred one million, two thousand, two hundred eighteen".