20213405330242 has 32 divisors (see below), whose sum is σ = 30828295278000. Its totient is φ = 9938677152000.

The previous prime is 20213405330233. The next prime is 20213405330281. The reversal of 20213405330242 is 24203350431202.

It can be written as a sum of positive squares in 8 ways, for example, as 6007298058441 + 14206107271801 = 2450979^2 + 3769099^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 581144892 + ... + 581179672.

Almost surely, 2^{20213405330242} is an apocalyptic number.

20213405330242 is a deficient number, since it is larger than the sum of its proper divisors (10614889947758).

20213405330242 is a wasteful number, since it uses less digits than its factorization.

20213405330242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54342.

The product of its (nonzero) digits is 34560, while the sum is 31.

Adding to 20213405330242 its reverse (24203350431202), we get a palindrome (44416755761444).

The spelling of 20213405330242 in words is "twenty trillion, two hundred thirteen billion, four hundred five million, three hundred thirty thousand, two hundred forty-two".