220102210000121 has 2 divisors, whose sum is σ = 220102210000122. Its totient is φ = 220102210000120.

The previous prime is 220102210000069. The next prime is 220102210000177. The reversal of 220102210000121 is 121000012201022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116209262401600 + 103892947598521 = 10780040^2 + 10192789^2 .

It is a cyclic number.

It is not a de Polignac number, because 220102210000121 - 2¹⁰ = 220102209999097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220102210000096 and 220102210000105.

It is not a weakly prime, because it can be changed into another prime (220102210000021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110051105000060 + 110051105000061.

It is an arithmetic number, because the mean of its divisors is an integer number (110051105000061).

Almost surely, 2^{220102210000121} is an apocalyptic number.

It is an amenable number.

220102210000121 is a deficient number, since it is larger than the sum of its proper divisors (1).

220102210000121 is an equidigital number, since it uses as much as digits as its factorization.

220102210000121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 220102210000121 its reverse (121000012201022), we get a palindrome (341102222201143).

The spelling of 220102210000121 in words is "two hundred twenty trillion, one hundred two billion, two hundred ten million, one hundred twenty-one", and thus it is an aban number.