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121211199983 is a prime number
BaseRepresentation
bin111000011100011000…
…0000010000111101111
3102120212102020221112002
41300320300002013233
53441220031344413
6131403400402515
711520504125456
oct1607060020757
9376772227462
10121211199983
1147450620645
121b5a947643b
13b579100653
145c1c14db9d
1532464a4958
hex1c38c021ef

121211199983 has 2 divisors, whose sum is σ = 121211199984. Its totient is φ = 121211199982.

The previous prime is 121211199961. The next prime is 121211200039. The reversal of 121211199983 is 389991112121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-121211199983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121211199943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60605599991 + 60605599992.

It is an arithmetic number, because the mean of its divisors is an integer number (60605599992).

Almost surely, 2121211199983 is an apocalyptic number.

121211199983 is a deficient number, since it is larger than the sum of its proper divisors (1).

121211199983 is an equidigital number, since it uses as much as digits as its factorization.

121211199983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69984, while the sum is 47.

The spelling of 121211199983 in words is "one hundred twenty-one billion, two hundred eleven million, one hundred ninety-nine thousand, nine hundred eighty-three".