202241021 has 4 divisors (see below), whose sum is σ = 204131232. Its totient is φ = 200350812.

The previous prime is 202241009. The next prime is 202241051. The reversal of 202241021 is 120142202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 202241021 - 2⁶ = 202240957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202240987 and 202241005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202241051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 944945 + ... + 945158.

It is an arithmetic number, because the mean of its divisors is an integer number (51032808).

Almost surely, 2^202241021 is an apocalyptic number.

It is an amenable number.

202241021 is a deficient number, since it is larger than the sum of its proper divisors (1890211).

202241021 is a wasteful number, since it uses less digits than its factorization.

202241021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1890210.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 202241021 is about 14221.1469649955. The cubic root of 202241021 is about 586.9797014767.

Adding to 202241021 its reverse (120142202), we get a palindrome (322383223).

The spelling of 202241021 in words is "two hundred two million, two hundred forty-one thousand, twenty-one".