10221210120221 has 8 divisors (see below), whose sum is σ = 10559624822784. Its totient is φ = 9883339058160.

The previous prime is 10221210120217. The next prime is 10221210120257. The reversal of 10221210120221 is 12202101212201.

10221210120221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 10221210120221 - 2² = 10221210120217 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10221210120221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221210120521) 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, 135871901 + ... + 135947106.

It is an arithmetic number, because the mean of its divisors is an integer number (1319953102848).

Almost surely, 2^{10221210120221} is an apocalyptic number.

It is an amenable number.

10221210120221 is a deficient number, since it is larger than the sum of its proper divisors (338414702563).

10221210120221 is a wasteful number, since it uses less digits than its factorization.

10221210120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271820251.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 10221210120221 its reverse (12202101212201), we get a palindrome (22423311332422).

The spelling of 10221210120221 in words is "ten trillion, two hundred twenty-one billion, two hundred ten million, one hundred twenty thousand, two hundred twenty-one".