1210542353989 has 2 divisors, whose sum is σ = 1210542353990. Its totient is φ = 1210542353988.

The previous prime is 1210542353941. The next prime is 1210542354011. The reversal of 1210542353989 is 9893532450121.

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., 850581952900 + 359960401089 = 922270^2 + 599967^2 .

It is an emirp because it is prime and its reverse (9893532450121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1210542353989 - 2⁹ = 1210542353477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1210542350989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605271176994 + 605271176995.

It is an arithmetic number, because the mean of its divisors is an integer number (605271176995).

Almost surely, 2^{1210542353989} is an apocalyptic number.

It is an amenable number.

1210542353989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210542353989 is an equidigital number, since it uses as much as digits as its factorization.

1210542353989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2332800, while the sum is 52.

The spelling of 1210542353989 in words is "one trillion, two hundred ten billion, five hundred forty-two million, three hundred fifty-three thousand, nine hundred eighty-nine".