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121102020217 is a prime number
BaseRepresentation
bin111000011001000111…
…1100010111001111001
3102120120210211001001001
41300302033202321321
53441004104121332
6131344500325001
711515010121223
oct1606217427171
9376523731031
10121102020217
11473a4a2a232
121b5789a3761
13b55c5c4739
145c0b84d413
15323bada0e7
hex1c323e2e79

121102020217 has 2 divisors, whose sum is σ = 121102020218. Its totient is φ = 121102020216.

The previous prime is 121102020209. The next prime is 121102020227. The reversal of 121102020217 is 712020201121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77339053801 + 43762966416 = 278099^2 + 209196^2 .

It is a cyclic number.

It is not a de Polignac number, because 121102020217 - 23 = 121102020209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121102020194 and 121102020203.

It is not a weakly prime, because it can be changed into another prime (121102020227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60551010108 + 60551010109.

It is an arithmetic number, because the mean of its divisors is an integer number (60551010109).

Almost surely, 2121102020217 is an apocalyptic number.

It is an amenable number.

121102020217 is a deficient number, since it is larger than the sum of its proper divisors (1).

121102020217 is an equidigital number, since it uses as much as digits as its factorization.

121102020217 is an evil number, because the sum of its binary digits is even.

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

Adding to 121102020217 its reverse (712020201121), we get a palindrome (833122221338).

The spelling of 121102020217 in words is "one hundred twenty-one billion, one hundred two million, twenty thousand, two hundred seventeen".