12021140402077 has 2 divisors, whose sum is σ = 12021140402078. Its totient is φ = 12021140402076.

The previous prime is 12021140402021. The next prime is 12021140402081. The reversal of 12021140402077 is 77020404112021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10645478833081 + 1375661568996 = 3262741^2 + 1172886^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12021140402077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12021140402477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010570201038 + 6010570201039.

It is an arithmetic number, because the mean of its divisors is an integer number (6010570201039).

Almost surely, 2^{12021140402077} is an apocalyptic number.

It is an amenable number.

12021140402077 is a deficient number, since it is larger than the sum of its proper divisors (1).

12021140402077 is an equidigital number, since it uses as much as digits as its factorization.

12021140402077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6272, while the sum is 31.

Adding to 12021140402077 its reverse (77020404112021), we get a palindrome (89041544514098).

The spelling of 12021140402077 in words is "twelve trillion, twenty-one billion, one hundred forty million, four hundred two thousand, seventy-seven".