10202202212261 has 2 divisors, whose sum is σ = 10202202212262. Its totient is φ = 10202202212260.

The previous prime is 10202202212243. The next prime is 10202202212329. The reversal of 10202202212261 is 16221220220201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9174198863236 + 1028003349025 = 3028894^2 + 1013905^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10202202212261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10202202212161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5101101106130 + 5101101106131.

It is an arithmetic number, because the mean of its divisors is an integer number (5101101106131).

Almost surely, 2^{10202202212261} is an apocalyptic number.

It is an amenable number.

10202202212261 is a deficient number, since it is larger than the sum of its proper divisors (1).

10202202212261 is an equidigital number, since it uses as much as digits as its factorization.

10202202212261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 10202202212261 its reverse (16221220220201), we get a palindrome (26423422432462).

The spelling of 10202202212261 in words is "ten trillion, two hundred two billion, two hundred two million, two hundred twelve thousand, two hundred sixty-one".