212203220984549 has 2 divisors, whose sum is σ = 212203220984550. Its totient is φ = 212203220984548.

The previous prime is 212203220984449. The next prime is 212203220984617. The reversal of 212203220984549 is 945489022302212.

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., 188175018936100 + 24028202048449 = 13717690^2 + 4901857^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212203220984549 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212203220984549.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212203220984449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106101610492274 + 106101610492275.

It is an arithmetic number, because the mean of its divisors is an integer number (106101610492275).

Almost surely, 2^{212203220984549} is an apocalyptic number.

It is an amenable number.

212203220984549 is a deficient number, since it is larger than the sum of its proper divisors (1).

212203220984549 is an equidigital number, since it uses as much as digits as its factorization.

212203220984549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4976640, while the sum is 53.

The spelling of 212203220984549 in words is "two hundred twelve trillion, two hundred three billion, two hundred twenty million, nine hundred eighty-four thousand, five hundred forty-nine".