10202201022221 has 8 divisors (see below), whose sum is σ = 11365847293080. Its totient is φ = 9092677833792.

The previous prime is 10202201022197. The next prime is 10202201022289. The reversal of 10202201022221 is 12222010220201.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 998950275625 + 9203250746596 = 999475^2 + 3033686^2 .

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 10202201022221 - 2¹⁸ = 10202200760077 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 10202201022221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10202201022421) 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, 13530770210 + ... + 13530770963.

It is an arithmetic number, because the mean of its divisors is an integer number (1420730911635).

Almost surely, 2^{10202201022221} is an apocalyptic number.

It is an amenable number.

10202201022221 is a deficient number, since it is larger than the sum of its proper divisors (1163646270859).

10202201022221 is a wasteful number, since it uses less digits than its factorization.

10202201022221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27061541215.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 10202201022221 its reverse (12222010220201), we get a palindrome (22424211242422).

The spelling of 10202201022221 in words is "ten trillion, two hundred two billion, two hundred one million, twenty-two thousand, two hundred twenty-one".