202110421241 has 2 divisors, whose sum is σ = 202110421242. Its totient is φ = 202110421240.

The previous prime is 202110421159. The next prime is 202110421243. The reversal of 202110421241 is 142124011202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 181479408016 + 20631013225 = 426004^2 + 143635^2 .

It is a cyclic number.

It is not a de Polignac number, because 202110421241 - 2¹⁴ = 202110404857 is a prime.

Together with 202110421243, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (202110421243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101055210620 + 101055210621.

It is an arithmetic number, because the mean of its divisors is an integer number (101055210621).

Almost surely, 2^202110421241 is an apocalyptic number.

It is an amenable number.

202110421241 is a deficient number, since it is larger than the sum of its proper divisors (1).

202110421241 is an equidigital number, since it uses as much as digits as its factorization.

202110421241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 202110421241 its reverse (142124011202), we get a palindrome (344234432443).

The spelling of 202110421241 in words is "two hundred two billion, one hundred ten million, four hundred twenty-one thousand, two hundred forty-one".