210002222011121 has 2 divisors, whose sum is σ = 210002222011122. Its totient is φ = 210002222011120.

The previous prime is 210002222011079. The next prime is 210002222011189. The reversal of 210002222011121 is 121110222200012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 207535717210000 + 2466504801121 = 14406100^2 + 1570511^2 .

It is a cyclic number.

It is not a de Polignac number, because 210002222011121 - 2²⁶ = 210002154902257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 210002222011121.

It is not a weakly prime, because it can be changed into another prime (210002222041121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105001111005560 + 105001111005561.

It is an arithmetic number, because the mean of its divisors is an integer number (105001111005561).

Almost surely, 2^{210002222011121} is an apocalyptic number.

It is an amenable number.

210002222011121 is a deficient number, since it is larger than the sum of its proper divisors (1).

210002222011121 is an equidigital number, since it uses as much as digits as its factorization.

210002222011121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 210002222011121 its reverse (121110222200012), we get a palindrome (331112444211133).

The spelling of 210002222011121 in words is "two hundred ten trillion, two billion, two hundred twenty-two million, eleven thousand, one hundred twenty-one".