20521030322 has 8 divisors (see below), whose sum is σ = 33149356716. Its totient is φ = 9471244752.

The previous prime is 20521030279. The next prime is 20521030333. The reversal of 20521030322 is 22303012502.

It can be written as a sum of positive squares in 2 ways, for example, as 20109792481 + 411237841 = 141809^2 + 20279^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×20521030322² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20521030294 and 20521030303.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 394635173 + ... + 394635224.

Almost surely, 2^20521030322 is an apocalyptic number.

20521030322 is a deficient number, since it is larger than the sum of its proper divisors (12628326394).

20521030322 is a wasteful number, since it uses less digits than its factorization.

20521030322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 789270412.

The product of its (nonzero) digits is 720, while the sum is 20.

Adding to 20521030322 its reverse (22303012502), we get a palindrome (42824042824).

It can be divided in two parts, 205210 and 30322, that added together give a palindrome (235532).

The spelling of 20521030322 in words is "twenty billion, five hundred twenty-one million, thirty thousand, three hundred twenty-two".