212012120021089 has 2 divisors, whose sum is σ = 212012120021090. Its totient is φ = 212012120021088.

The previous prime is 212012120021077. The next prime is 212012120021113. The reversal of 212012120021089 is 980120021210212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 137859699028689 + 74152420992400 = 11741367^2 + 8611180^2 .

It is a cyclic number.

It is not a de Polignac number, because 212012120021089 - 2⁵ = 212012120021057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212012120021089.

It is not a weakly prime, because it can be changed into another prime (212012120025089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106006060010544 + 106006060010545.

It is an arithmetic number, because the mean of its divisors is an integer number (106006060010545).

Almost surely, 2^{212012120021089} is an apocalyptic number.

It is an amenable number.

212012120021089 is a deficient number, since it is larger than the sum of its proper divisors (1).

212012120021089 is an equidigital number, since it uses as much as digits as its factorization.

212012120021089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 31.

The spelling of 212012120021089 in words is "two hundred twelve trillion, twelve billion, one hundred twenty million, twenty-one thousand, eighty-nine".