210021200219 has 2 divisors, whose sum is σ = 210021200220. Its totient is φ = 210021200218.

The previous prime is 210021200209. The next prime is 210021200227. The reversal of 210021200219 is 912002120012.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210021200219 is a prime.

It is a super-2 number, since 2×210021200219² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 210021200219.

It is not a weakly prime, because it can be changed into another prime (210021200209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105010600109 + 105010600110.

It is an arithmetic number, because the mean of its divisors is an integer number (105010600110).

Almost surely, 2^210021200219 is an apocalyptic number.

210021200219 is a deficient number, since it is larger than the sum of its proper divisors (1).

210021200219 is an equidigital number, since it uses as much as digits as its factorization.

210021200219 is an evil number, because the sum of its binary digits is even.

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

It can be divided in two parts, 21002 and 1200219, that added together give a palindrome (1221221).

The spelling of 210021200219 in words is "two hundred ten billion, twenty-one million, two hundred thousand, two hundred nineteen".