202121210219 has 2 divisors, whose sum is σ = 202121210220. Its totient is φ = 202121210218.

The previous prime is 202121210197. The next prime is 202121210233. The reversal of 202121210219 is 912012121202.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202121210219 is a prime.

It is a super-2 number, since 2×202121210219² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 202121210194 and 202121210203.

It is not a weakly prime, because it can be changed into another prime (202121210279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101060605109 + 101060605110.

It is an arithmetic number, because the mean of its divisors is an integer number (101060605110).

Almost surely, 2^202121210219 is an apocalyptic number.

202121210219 is a deficient number, since it is larger than the sum of its proper divisors (1).

202121210219 is an equidigital number, since it uses as much as digits as its factorization.

202121210219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 202121210219 in words is "two hundred two billion, one hundred twenty-one million, two hundred ten thousand, two hundred nineteen".