1211205150473 has 2 divisors, whose sum is σ = 1211205150474. Its totient is φ = 1211205150472.

The previous prime is 1211205150457. The next prime is 1211205150509. The reversal of 1211205150473 is 3740515021121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1175396400649 + 35808749824 = 1084157^2 + 189232^2 .

It is a cyclic number.

It is not a de Polignac number, because 1211205150473 - 2⁴ = 1211205150457 is a prime.

It is not a weakly prime, because it can be changed into another prime (1211205150973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605602575236 + 605602575237.

It is an arithmetic number, because the mean of its divisors is an integer number (605602575237).

Almost surely, 2^{1211205150473} is an apocalyptic number.

It is an amenable number.

1211205150473 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211205150473 is an equidigital number, since it uses as much as digits as its factorization.

1211205150473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8400, while the sum is 32.

The spelling of 1211205150473 in words is "one trillion, two hundred eleven billion, two hundred five million, one hundred fifty thousand, four hundred seventy-three".