10221311320306 has 4 divisors (see below), whose sum is σ = 15331966980462. Its totient is φ = 5110655660152.

The previous prime is 10221311320291. The next prime is 10221311320307. The reversal of 10221311320306 is 60302311312201.

It is a happy number.

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., 5742776095281 + 4478535225025 = 2396409^2 + 2116255^2 .

It is not an unprimeable number, because it can be changed into a prime (10221311320307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2555327830075 + ... + 2555327830078.

Almost surely, 2^{10221311320306} is an apocalyptic number.

10221311320306 is a deficient number, since it is larger than the sum of its proper divisors (5110655660156).

10221311320306 is an equidigital number, since it uses as much as digits as its factorization.

10221311320306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5110655660155.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 10221311320306 its reverse (60302311312201), we get a palindrome (70523622632507).

The spelling of 10221311320306 in words is "ten trillion, two hundred twenty-one billion, three hundred eleven million, three hundred twenty thousand, three hundred six".