12010020209977 has 2 divisors, whose sum is σ = 12010020209978. Its totient is φ = 12010020209976.

The previous prime is 12010020209953. The next prime is 12010020209981. The reversal of 12010020209977 is 77990202001021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11170641747001 + 839378462976 = 3342251^2 + 916176^2 .

It is a cyclic number.

It is not a de Polignac number, because 12010020209977 - 2²³ = 12010011821369 is a prime.

It is not a weakly prime, because it can be changed into another prime (12010020209987) 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, 6005010104988 + 6005010104989.

It is an arithmetic number, because the mean of its divisors is an integer number (6005010104989).

Almost surely, 2^{12010020209977} is an apocalyptic number.

It is an amenable number.

12010020209977 is a deficient number, since it is larger than the sum of its proper divisors (1).

12010020209977 is an equidigital number, since it uses as much as digits as its factorization.

12010020209977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31752, while the sum is 40.

The spelling of 12010020209977 in words is "twelve trillion, ten billion, twenty million, two hundred nine thousand, nine hundred seventy-seven".