10202210222221 has 2 divisors, whose sum is σ = 10202210222222. Its totient is φ = 10202210222220.

The previous prime is 10202210222159. The next prime is 10202210222233. The reversal of 10202210222221 is 12222201220201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8001764330121 + 2200445892100 = 2828739^2 + 1483390^2 .

It is a cyclic number.

It is not a de Polignac number, because 10202210222221 - 2¹⁵ = 10202210189453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10202210222621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5101105111110 + 5101105111111.

It is an arithmetic number, because the mean of its divisors is an integer number (5101105111111).

Almost surely, 2^{10202210222221} is an apocalyptic number.

It is an amenable number.

10202210222221 is a deficient number, since it is larger than the sum of its proper divisors (1).

10202210222221 is an equidigital number, since it uses as much as digits as its factorization.

10202210222221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 10202210222221 its reverse (12222201220201), we get a palindrome (22424411442422).

The spelling of 10202210222221 in words is "ten trillion, two hundred two billion, two hundred ten million, two hundred twenty-two thousand, two hundred twenty-one".