221010202222129 has 2 divisors, whose sum is σ = 221010202222130. Its totient is φ = 221010202222128.

The previous prime is 221010202222123. The next prime is 221010202222247. The reversal of 221010202222129 is 921222202010122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 156258375112225 + 64751827109904 = 12500335^2 + 8046852^2 .

It is a cyclic number.

It is not a de Polignac number, because 221010202222129 - 2¹⁷ = 221010202091057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221010202222097 and 221010202222106.

It is not a weakly prime, because it can be changed into another prime (221010202222123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110505101111064 + 110505101111065.

It is an arithmetic number, because the mean of its divisors is an integer number (110505101111065).

Almost surely, 2^{221010202222129} is an apocalyptic number.

It is an amenable number.

221010202222129 is a deficient number, since it is larger than the sum of its proper divisors (1).

221010202222129 is an equidigital number, since it uses as much as digits as its factorization.

221010202222129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 28.

The spelling of 221010202222129 in words is "two hundred twenty-one trillion, ten billion, two hundred two million, two hundred twenty-two thousand, one hundred twenty-nine".