202441021 has 2 divisors, whose sum is σ = 202441022. Its totient is φ = 202441020.

The previous prime is 202441003. The next prime is 202441039. The reversal of 202441021 is 120144202.

It is a balanced prime because it is at equal distance from previous prime (202441003) and next prime (202441039).

It can be written as a sum of positive squares in only one way, i.e., 202037796 + 403225 = 14214^2 + 635^2 .

It is a cyclic number.

It is not a de Polignac number, because 202441021 - 2⁵ = 202440989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202440986 and 202441004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202441051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101220510 + 101220511.

It is an arithmetic number, because the mean of its divisors is an integer number (101220511).

Almost surely, 2^202441021 is an apocalyptic number.

It is an amenable number.

202441021 is a deficient number, since it is larger than the sum of its proper divisors (1).

202441021 is an equidigital number, since it uses as much as digits as its factorization.

202441021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 202441021 is about 14228.1770090198. The cubic root of 202441021 is about 587.1731295337.

Adding to 202441021 its reverse (120144202), we get a palindrome (322585223).

The spelling of 202441021 in words is "two hundred two million, four hundred forty-one thousand, twenty-one".