120312152281 has 2 divisors, whose sum is σ = 120312152282. Its totient is φ = 120312152280.

The previous prime is 120312152263. The next prime is 120312152407. The reversal of 120312152281 is 182251213021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120311859600 + 292681 = 346860^2 + 541^2 .

It is a cyclic number.

It is not a de Polignac number, because 120312152281 - 2¹³ = 120312144089 is a prime.

It is a super-2 number, since 2×120312152281² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (120312156281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60156076140 + 60156076141.

It is an arithmetic number, because the mean of its divisors is an integer number (60156076141).

Almost surely, 2^120312152281 is an apocalyptic number.

It is an amenable number.

120312152281 is a deficient number, since it is larger than the sum of its proper divisors (1).

120312152281 is an equidigital number, since it uses as much as digits as its factorization.

120312152281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1920, while the sum is 28.

The spelling of 120312152281 in words is "one hundred twenty billion, three hundred twelve million, one hundred fifty-two thousand, two hundred eighty-one".