120011977 has 2 divisors, whose sum is σ = 120011978. Its totient is φ = 120011976.

The previous prime is 120011971. The next prime is 120012001. The reversal of 120011977 is 779110021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115154361 + 4857616 = 10731^2 + 2204^2 .

It is an emirp because it is prime and its reverse (779110021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 120011977 - 2⁷ = 120011849 is a prime.

It is not a weakly prime, because it can be changed into another prime (120011971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60005988 + 60005989.

It is an arithmetic number, because the mean of its divisors is an integer number (60005989).

Almost surely, 2^120011977 is an apocalyptic number.

It is an amenable number.

120011977 is a deficient number, since it is larger than the sum of its proper divisors (1).

120011977 is an equidigital number, since it uses as much as digits as its factorization.

120011977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 882, while the sum is 28.

The square root of 120011977 is about 10954.9978092193. The cubic root of 120011977 is about 493.2588242213.

Adding to 120011977 its reverse (779110021), we get a palindrome (899121998).

The spelling of 120011977 in words is "one hundred twenty million, eleven thousand, nine hundred seventy-seven".