120202054540681 has 2 divisors, whose sum is σ = 120202054540682. Its totient is φ = 120202054540680.

The previous prime is 120202054540669. The next prime is 120202054540691. The reversal of 120202054540681 is 186045450202021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85188100467600 + 35013954073081 = 9229740^2 + 5917259^2 .

It is an emirp because it is prime and its reverse (186045450202021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 120202054540681 - 2¹³ = 120202054532489 is a prime.

It is a super-2 number, since 2×120202054540681² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (120202054540621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60101027270340 + 60101027270341.

It is an arithmetic number, because the mean of its divisors is an integer number (60101027270341).

Almost surely, 2^{120202054540681} is an apocalyptic number.

It is an amenable number.

120202054540681 is a deficient number, since it is larger than the sum of its proper divisors (1).

120202054540681 is an equidigital number, since it uses as much as digits as its factorization.

120202054540681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 153600, while the sum is 40.

The spelling of 120202054540681 in words is "one hundred twenty trillion, two hundred two billion, fifty-four million, five hundred forty thousand, six hundred eighty-one".