221021221010002 has 128 divisors (see below), whose sum is σ = 422038742791680. Its totient is φ = 84621970944000.

The previous prime is 221021221009987. The next prime is 221021221010039. The reversal of 221021221010002 is 200010122120122.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 812857552 + ... + 813129412.

It is an arithmetic number, because the mean of its divisors is an integer number (3297177678060).

Almost surely, 2^{221021221010002} is an apocalyptic number.

221021221010002 is a deficient number, since it is larger than the sum of its proper divisors (201017521781678).

221021221010002 is a wasteful number, since it uses less digits than its factorization.

221021221010002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273908.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 221021221010002 its reverse (200010122120122), we get a palindrome (421031343130124).

It can be divided in two parts, 2210 and 21221010002, that added together give a palindrome (21221012212).

The spelling of 221021221010002 in words is "two hundred twenty-one trillion, twenty-one billion, two hundred twenty-one million, ten thousand, two".