10121702221 has 2 divisors, whose sum is σ = 10121702222. Its totient is φ = 10121702220.

The previous prime is 10121702183. The next prime is 10121702251. The reversal of 10121702221 is 12220712101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5082264100 + 5039438121 = 71290^2 + 70989^2 .

It is a cyclic number.

It is not a de Polignac number, because 10121702221 - 2⁷ = 10121702093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10121702251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5060851110 + 5060851111.

It is an arithmetic number, because the mean of its divisors is an integer number (5060851111).

Almost surely, 2^10121702221 is an apocalyptic number.

It is an amenable number.

10121702221 is a deficient number, since it is larger than the sum of its proper divisors (1).

10121702221 is an equidigital number, since it uses as much as digits as its factorization.

10121702221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 19.

The spelling of 10121702221 in words is "ten billion, one hundred twenty-one million, seven hundred two thousand, two hundred twenty-one".