10202122010221 has 2 divisors, whose sum is σ = 10202122010222. Its totient is φ = 10202122010220.

The previous prime is 10202122010207. The next prime is 10202122010237. The reversal of 10202122010221 is 12201022120201.

It is a happy number.

It is an a-pointer prime, because the next prime (10202122010237) can be obtained adding 10202122010221 to its sum of digits (16).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10160092500100 + 42029510121 = 3187490^2 + 205011^2 .

It is a cyclic number.

It is not a de Polignac number, because 10202122010221 - 2¹³ = 10202122002029 is a prime.

It is a super-2 number, since 2×10202122010221² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10202122010195 and 10202122010204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10202122010251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5101061005110 + 5101061005111.

It is an arithmetic number, because the mean of its divisors is an integer number (5101061005111).

Almost surely, 2^{10202122010221} is an apocalyptic number.

It is an amenable number.

10202122010221 is a deficient number, since it is larger than the sum of its proper divisors (1).

10202122010221 is an equidigital number, since it uses as much as digits as its factorization.

10202122010221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 10202122010221 its reverse (12201022120201), we get a palindrome (22403144130422).

The spelling of 10202122010221 in words is "ten trillion, two hundred two billion, one hundred twenty-two million, ten thousand, two hundred twenty-one".