210202331331242 has 4 divisors (see below), whose sum is σ = 315303496996866. Its totient is φ = 105101165665620.

The previous prime is 210202331331241. The next prime is 210202331331331. The reversal of 210202331331242 is 242133133202012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 139082608902241 + 71119722429001 = 11793329^2 + 8433251^2 .

It is not an unprimeable number, because it can be changed into a prime (210202331331241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52550582832809 + ... + 52550582832812.

Almost surely, 2^{210202331331242} is an apocalyptic number.

210202331331242 is a deficient number, since it is larger than the sum of its proper divisors (105101165665624).

210202331331242 is a wasteful number, since it uses less digits than its factorization.

210202331331242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105101165665623.

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 210202331331242 its reverse (242133133202012), we get a palindrome (452335464533254).

The spelling of 210202331331242 in words is "two hundred ten trillion, two hundred two billion, three hundred thirty-one million, three hundred thirty-one thousand, two hundred forty-two".