21202100219 has 8 divisors (see below), whose sum is σ = 21520988160. Its totient is φ = 20883284136.

The previous prime is 21202100207. The next prime is 21202100267. The reversal of 21202100219 is 91200120212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21202100219 - 2³² = 16907132923 is a prime.

It is a super-2 number, since 2×21202100219² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21202100219.

It is not an unprimeable number, because it can be changed into a prime (21202100279) 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, 1040402 + ... + 1060584.

It is an arithmetic number, because the mean of its divisors is an integer number (2690123520).

Almost surely, 2^21202100219 is an apocalyptic number.

21202100219 is a deficient number, since it is larger than the sum of its proper divisors (318887941).

21202100219 is a wasteful number, since it uses less digits than its factorization.

21202100219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35929.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 21202100219 in words is "twenty-one billion, two hundred two million, one hundred thousand, two hundred nineteen".