1211350663 has 2 divisors, whose sum is σ = 1211350664. Its totient is φ = 1211350662.

The previous prime is 1211350603. The next prime is 1211350703. The reversal of 1211350663 is 3660531121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1211350663 - 2²¹ = 1209253511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1211350603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605675331 + 605675332.

It is an arithmetic number, because the mean of its divisors is an integer number (605675332).

Almost surely, 2^1211350663 is an apocalyptic number.

1211350663 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211350663 is an equidigital number, since it uses as much as digits as its factorization.

1211350663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 1211350663 is about 34804.4632626334. The cubic root of 1211350663 is about 1065.9985823086.

Adding to 1211350663 its reverse (3660531121), we get a palindrome (4871881784).

The spelling of 1211350663 in words is "one billion, two hundred eleven million, three hundred fifty thousand, six hundred sixty-three".