10221202101221 has 16 divisors (see below), whose sum is σ = 10518064484928. Its totient is φ = 9927043257600.

The previous prime is 10221202101139. The next prime is 10221202101239. The reversal of 10221202101221 is 12210120212201.

It is a cyclic number.

It is not a de Polignac number, because 10221202101221 - 2²⁶ = 10221134992357 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 10221202101221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221202101421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62314406 + ... + 62478216.

It is an arithmetic number, because the mean of its divisors is an integer number (657379030308).

Almost surely, 2^{10221202101221} is an apocalyptic number.

It is an amenable number.

10221202101221 is a deficient number, since it is larger than the sum of its proper divisors (296862383707).

10221202101221 is a wasteful number, since it uses less digits than its factorization.

10221202101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172052.

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

Adding to 10221202101221 its reverse (12210120212201), we get a palindrome (22431322313422).

The spelling of 10221202101221 in words is "ten trillion, two hundred twenty-one billion, two hundred two million, one hundred one thousand, two hundred twenty-one".