20002210100221 has 2 divisors, whose sum is σ = 20002210100222. Its totient is φ = 20002210100220.

The previous prime is 20002210100183. The next prime is 20002210100267. The reversal of 20002210100221 is 12200101220002.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18238323303225 + 1763886796996 = 4270635^2 + 1328114^2 .

It is a cyclic number.

It is not a de Polignac number, because 20002210100221 - 2¹⁷ = 20002209969149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20002210109221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001105050110 + 10001105050111.

It is an arithmetic number, because the mean of its divisors is an integer number (10001105050111).

Almost surely, 2^{20002210100221} is an apocalyptic number.

It is an amenable number.

20002210100221 is a deficient number, since it is larger than the sum of its proper divisors (1).

20002210100221 is an equidigital number, since it uses as much as digits as its factorization.

20002210100221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20002210100221 its reverse (12200101220002), we get a palindrome (32202311320223).

The spelling of 20002210100221 in words is "twenty trillion, two billion, two hundred ten million, one hundred thousand, two hundred twenty-one".