242525350021 has 2 divisors, whose sum is σ = 242525350022. Its totient is φ = 242525350020.

The previous prime is 242525350019. The next prime is 242525350043. The reversal of 242525350021 is 120053525242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 231255192100 + 11270157921 = 480890^2 + 106161^2 .

It is a cyclic number.

It is not a de Polignac number, because 242525350021 - 2¹ = 242525350019 is a prime.

Together with 242525350019, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242525357021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121262675010 + 121262675011.

It is an arithmetic number, because the mean of its divisors is an integer number (121262675011).

Almost surely, 2^242525350021 is an apocalyptic number.

It is an amenable number.

242525350021 is a deficient number, since it is larger than the sum of its proper divisors (1).

242525350021 is an equidigital number, since it uses as much as digits as its factorization.

242525350021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24000, while the sum is 31.

Adding to 242525350021 its reverse (120053525242), we get a palindrome (362578875263).

The spelling of 242525350021 in words is "two hundred forty-two billion, five hundred twenty-five million, three hundred fifty thousand, twenty-one".