221320312021010 has 64 divisors (see below), whose sum is σ = 426243144049920. Its totient is φ = 82489031527680.

The previous prime is 221320312021007. The next prime is 221320312021021. The reversal of 221320312021010 is 10120213023122.

It is a Curzon 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 in 31 ways as a sum of consecutive naturals, for example, 200919704 + ... + 202018236.

It is an arithmetic number, because the mean of its divisors is an integer number (6660049125780).

Almost surely, 2^{221320312021010} is an apocalyptic number.

221320312021010 is a deficient number, since it is larger than the sum of its proper divisors (204922832028910).

221320312021010 is a wasteful number, since it uses less digits than its factorization.

221320312021010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1116003.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 221320312021010 its reverse (10120213023122), we get a palindrome (231440525044132).

The spelling of 221320312021010 in words is "two hundred twenty-one trillion, three hundred twenty billion, three hundred twelve million, twenty-one thousand, ten".