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121221211159 is a prime number
BaseRepresentation
bin111000011100101011…
…0001110010000010111
3102120220010002120021101
41300321112032100113
53441230112224114
6131404355130531
711520655202536
oct1607126162027
9376803076241
10121221211159
1147456239144
121b5b08a3a47
13b57b1c7319
145c1d5d831d
1532472d0d74
hex1c3958e417

121221211159 has 2 divisors, whose sum is σ = 121221211160. Its totient is φ = 121221211158.

The previous prime is 121221211151. The next prime is 121221211249. The reversal of 121221211159 is 951112122121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121221211159 - 23 = 121221211151 is a prime.

It is a super-2 number, since 2×1212212111592 (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121221211151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60610605579 + 60610605580.

It is an arithmetic number, because the mean of its divisors is an integer number (60610605580).

Almost surely, 2121221211159 is an apocalyptic number.

121221211159 is a deficient number, since it is larger than the sum of its proper divisors (1).

121221211159 is an equidigital number, since it uses as much as digits as its factorization.

121221211159 is an evil number, because the sum of its binary digits is even.

The product of its digits is 720, while the sum is 28.

The spelling of 121221211159 in words is "one hundred twenty-one billion, two hundred twenty-one million, two hundred eleven thousand, one hundred fifty-nine".