521103541022 has 4 divisors (see below), whose sum is σ = 781655311536. Its totient is φ = 260551770510.

The previous prime is 521103540989. The next prime is 521103541033. The reversal of 521103541022 is 220145301125.

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

It is a junction number, because it is equal to n+sod(n) for n = 521103540982 and 521103541000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130275885254 + ... + 130275885257.

It is an arithmetic number, because the mean of its divisors is an integer number (195413827884).

Almost surely, 2^521103541022 is an apocalyptic number.

521103541022 is a deficient number, since it is larger than the sum of its proper divisors (260551770514).

521103541022 is a wasteful number, since it uses less digits than its factorization.

521103541022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260551770513.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 521103541022 its reverse (220145301125), we get a palindrome (741248842147).

The spelling of 521103541022 in words is "five hundred twenty-one billion, one hundred three million, five hundred forty-one thousand, twenty-two".