202122121219 has 2 divisors, whose sum is σ = 202122121220. Its totient is φ = 202122121218.

The previous prime is 202122121189. The next prime is 202122121301. The reversal of 202122121219 is 912121221202.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 202122121219 - 2³¹ = 199974637571 is a prime.

It is a super-2 number, since 2×202122121219² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 202122121193 and 202122121202.

It is not a weakly prime, because it can be changed into another prime (202122721219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101061060609 + 101061060610.

It is an arithmetic number, because the mean of its divisors is an integer number (101061060610).

Almost surely, 2^202122121219 is an apocalyptic number.

202122121219 is a deficient number, since it is larger than the sum of its proper divisors (1).

202122121219 is an equidigital number, since it uses as much as digits as its factorization.

202122121219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 25.

The spelling of 202122121219 in words is "two hundred two billion, one hundred twenty-two million, one hundred twenty-one thousand, two hundred nineteen".