120202054540109 has 2 divisors, whose sum is σ = 120202054540110. Its totient is φ = 120202054540108.

The previous prime is 120202054540091. The next prime is 120202054540111. The reversal of 120202054540109 is 901045450202021.

Together with previous prime (120202054540091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72370376098084 + 47831678442025 = 8507078^2 + 6916045^2 .

It is an emirp because it is prime and its reverse (901045450202021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 120202054540109 - 2¹⁶ = 120202054474573 is a prime.

Together with 120202054540111, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120202054542109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60101027270054 + 60101027270055.

It is an arithmetic number, because the mean of its divisors is an integer number (60101027270055).

Almost surely, 2^{120202054540109} is an apocalyptic number.

It is an amenable number.

120202054540109 is a deficient number, since it is larger than the sum of its proper divisors (1).

120202054540109 is an equidigital number, since it uses as much as digits as its factorization.

120202054540109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28800, while the sum is 35.

The spelling of 120202054540109 in words is "one hundred twenty trillion, two hundred two billion, fifty-four million, five hundred forty thousand, one hundred nine".