120120201989 has 2 divisors, whose sum is σ = 120120201990. Its totient is φ = 120120201988.

The previous prime is 120120201983. The next prime is 120120202003. The reversal of 120120201989 is 989102021021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119686937764 + 433264225 = 345958^2 + 20815^2 .

It is an emirp because it is prime and its reverse (989102021021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 120120201989 - 2³⁶ = 51400725253 is a prime.

It is a super-2 number, since 2×120120201989² (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 (120120201983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60060100994 + 60060100995.

It is an arithmetic number, because the mean of its divisors is an integer number (60060100995).

Almost surely, 2^120120201989 is an apocalyptic number.

It is an amenable number.

120120201989 is a deficient number, since it is larger than the sum of its proper divisors (1).

120120201989 is an equidigital number, since it uses as much as digits as its factorization.

120120201989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 35.

The spelling of 120120201989 in words is "one hundred twenty billion, one hundred twenty million, two hundred one thousand, nine hundred eighty-nine".