1210542350989 has 2 divisors, whose sum is σ = 1210542350990. Its totient is φ = 1210542350988.

The previous prime is 1210542350929. The next prime is 1210542350993. The reversal of 1210542350989 is 9890532450121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1145852498025 + 64689852964 = 1070445^2 + 254342^2 .

It is a cyclic number.

It is not a de Polignac number, because 1210542350989 - 2⁷ = 1210542350861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1210542350929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605271175494 + 605271175495.

It is an arithmetic number, because the mean of its divisors is an integer number (605271175495).

Almost surely, 2^{1210542350989} is an apocalyptic number.

It is an amenable number.

1210542350989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210542350989 is an equidigital number, since it uses as much as digits as its factorization.

1210542350989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 777600, while the sum is 49.

The spelling of 1210542350989 in words is "one trillion, two hundred ten billion, five hundred forty-two million, three hundred fifty thousand, nine hundred eighty-nine".