10000001123221 has 8 divisors (see below), whose sum is σ = 10126643237120. Its totient is φ = 9873360505008.

The previous prime is 10000001123209. The next prime is 10000001123237. The reversal of 10000001123221 is 12232110000001.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10000001123221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10000001123201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20213995 + ... + 20702791.

It is an arithmetic number, because the mean of its divisors is an integer number (1265830404640).

Almost surely, 2^{10000001123221} is an apocalyptic number.

It is an amenable number.

10000001123221 is a deficient number, since it is larger than the sum of its proper divisors (126642113899).

10000001123221 is an equidigital number, since it uses as much as digits as its factorization.

10000001123221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747843.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 10000001123221 its reverse (12232110000001), we get a palindrome (22232111123222).

The spelling of 10000001123221 in words is "ten trillion, one million, one hundred twenty-three thousand, two hundred twenty-one".