12011021021057 has 2 divisors, whose sum is σ = 12011021021058. Its totient is φ = 12011021021056.

The previous prime is 12011021020967. The next prime is 12011021021063. The reversal of 12011021021057 is 75012012011021.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10896805662961 + 1114215358096 = 3301031^2 + 1055564^2 .

It is a cyclic number.

It is not a de Polignac number, because 12011021021057 - 2²⁴ = 12011004243841 is a prime.

It is not a weakly prime, because it can be changed into another prime (12011021021957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6005510510528 + 6005510510529.

It is an arithmetic number, because the mean of its divisors is an integer number (6005510510529).

Almost surely, 2^{12011021021057} is an apocalyptic number.

It is an amenable number.

12011021021057 is a deficient number, since it is larger than the sum of its proper divisors (1).

12011021021057 is an equidigital number, since it uses as much as digits as its factorization.

12011021021057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 280, while the sum is 23.

Adding to 12011021021057 its reverse (75012012011021), we get a palindrome (87023033032078).

The spelling of 12011021021057 in words is "twelve trillion, eleven billion, twenty-one million, twenty-one thousand, fifty-seven".