1221463 has 2 divisors, whose sum is σ = 1221464. Its totient is φ = 1221462.

The previous prime is 1221457. The next prime is 1221469. The reversal of 1221463 is 3641221.

It is a balanced prime because it is at equal distance from previous prime (1221457) and next prime (1221469).

It is an emirp because it is prime and its reverse (3641221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1221463 - 2¹³ = 1213271 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1221463.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1221469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610731 + 610732.

It is an arithmetic number, because the mean of its divisors is an integer number (610732).

2^1221463 is an apocalyptic number.

1221463 is a deficient number, since it is larger than the sum of its proper divisors (1).

1221463 is an equidigital number, since it uses as much as digits as its factorization.

1221463 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 288, while the sum is 19.

The square root of 1221463 is about 1105.1981722750. The cubic root of 1221463 is about 106.8956679475.

Adding to 1221463 its reverse (3641221), we get a palindrome (4862684).

The spelling of 1221463 in words is "one million, two hundred twenty-one thousand, four hundred sixty-three".