202421243113 has 2 divisors, whose sum is σ = 202421243114. Its totient is φ = 202421243112.

The previous prime is 202421243111. The next prime is 202421243119. The reversal of 202421243113 is 311342124202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 157439923369 + 44981319744 = 396787^2 + 212088^2 .

It is a cyclic number.

It is not a de Polignac number, because 202421243113 - 2¹ = 202421243111 is a prime.

Together with 202421243111, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (202421243111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101210621556 + 101210621557.

It is an arithmetic number, because the mean of its divisors is an integer number (101210621557).

Almost surely, 2^202421243113 is an apocalyptic number.

It is an amenable number.

202421243113 is a deficient number, since it is larger than the sum of its proper divisors (1).

202421243113 is an equidigital number, since it uses as much as digits as its factorization.

202421243113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 202421243113 its reverse (311342124202), we get a palindrome (513763367315).

The spelling of 202421243113 in words is "two hundred two billion, four hundred twenty-one million, two hundred forty-three thousand, one hundred thirteen".