11212120983757 has 2 divisors, whose sum is σ = 11212120983758. Its totient is φ = 11212120983756.

The previous prime is 11212120983733. The next prime is 11212120983797. The reversal of 11212120983757 is 75738902121211.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6577116738921 + 4635004244836 = 2564589^2 + 2152906^2 .

It is a cyclic number.

It is not a de Polignac number, because 11212120983757 - 2⁷ = 11212120983629 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11212120983757.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11212120983797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5606060491878 + 5606060491879.

It is an arithmetic number, because the mean of its divisors is an integer number (5606060491879).

Almost surely, 2^{11212120983757} is an apocalyptic number.

It is an amenable number.

11212120983757 is a deficient number, since it is larger than the sum of its proper divisors (1).

11212120983757 is an equidigital number, since it uses as much as digits as its factorization.

11212120983757 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 423360, while the sum is 49.

The spelling of 11212120983757 in words is "eleven trillion, two hundred twelve billion, one hundred twenty million, nine hundred eighty-three thousand, seven hundred fifty-seven".