10001022201221 has 8 divisors (see below), whose sum is σ = 10436140186944. Its totient is φ = 9565928460000.

The previous prime is 10001022201197. The next prime is 10001022201257. The reversal of 10001022201221 is 12210222010001.

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 10001022201221 - 2³⁸ = 9726144294277 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10001022201196 and 10001022201205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10001022801221) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5215655 + ... + 6870596.

It is an arithmetic number, because the mean of its divisors is an integer number (1304517523368).

Almost surely, 2^{10001022201221} is an apocalyptic number.

It is an amenable number.

10001022201221 is a deficient number, since it is larger than the sum of its proper divisors (435117985723).

10001022201221 is a wasteful number, since it uses less digits than its factorization.

10001022201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12122251.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 10001022201221 its reverse (12210222010001), we get a palindrome (22211244211222).

The spelling of 10001022201221 in words is "ten trillion, one billion, twenty-two million, two hundred one thousand, two hundred twenty-one".