10221221120221 has 8 divisors (see below), whose sum is σ = 10331423915904. Its totient is φ = 10111229240880.

The previous prime is 10221221120197. The next prime is 10221221120237. The reversal of 10221221120221 is 12202112212201.

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 10221221120221 - 2¹⁷ = 10221220989149 is a prime.

It is a super-2 number, since 2×10221221120221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221221123221) 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, 52631641 + ... + 52825486.

It is an arithmetic number, because the mean of its divisors is an integer number (1291427989488).

Almost surely, 2^{10221221120221} is an apocalyptic number.

It is an amenable number.

10221221120221 is a deficient number, since it is larger than the sum of its proper divisors (110202795683).

10221221120221 is a wasteful number, since it uses less digits than its factorization.

10221221120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105458171.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 10221221120221 its reverse (12202112212201), we get a palindrome (22423333332422).

The spelling of 10221221120221 in words is "ten trillion, two hundred twenty-one billion, two hundred twenty-one million, one hundred twenty thousand, two hundred twenty-one".