202021022121019 has 2 divisors, whose sum is σ = 202021022121020. Its totient is φ = 202021022121018.

The previous prime is 202021022120969. The next prime is 202021022121043. The reversal of 202021022121019 is 910121220120202.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 202021022121019 - 2²⁹ = 202020485250107 is a prime.

It is a super-2 number, since 2×202021022121019² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 202021022120984 and 202021022121002.

It is not a weakly prime, because it can be changed into another prime (202021022121049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101010511060509 + 101010511060510.

It is an arithmetic number, because the mean of its divisors is an integer number (101010511060510).

Almost surely, 2^{202021022121019} is an apocalyptic number.

202021022121019 is a deficient number, since it is larger than the sum of its proper divisors (1).

202021022121019 is an equidigital number, since it uses as much as digits as its factorization.

202021022121019 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 202021022121019 in words is "two hundred two trillion, twenty-one billion, twenty-two million, one hundred twenty-one thousand, nineteen".