1001002201221 has 8 divisors (see below), whose sum is σ = 1456003201824. Its totient is φ = 606668000720.

The previous prime is 1001002201193. The next prime is 1001002201289. The reversal of 1001002201221 is 1221022001001.

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

It is a cyclic number.

It is not a de Polignac number, because 1001002201221 - 2¹⁷ = 1001002070149 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1001002201197 and 1001002201206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001002201621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15166699986 + ... + 15166700051.

It is an arithmetic number, because the mean of its divisors is an integer number (182000400228).

Almost surely, 2^{1001002201221} is an apocalyptic number.

1001002201221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1001002201221 is a deficient number, since it is larger than the sum of its proper divisors (455001000603).

1001002201221 is a wasteful number, since it uses less digits than its factorization.

1001002201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30333400051.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1001002201221 its reverse (1221022001001), we get a palindrome (2222024202222).

The spelling of 1001002201221 in words is "one trillion, one billion, two million, two hundred one thousand, two hundred twenty-one".