1221412103 has 2 divisors, whose sum is σ = 1221412104. Its totient is φ = 1221412102.

The previous prime is 1221412097. The next prime is 1221412109. The reversal of 1221412103 is 3012141221.

It is a balanced prime because it is at equal distance from previous prime (1221412097) and next prime (1221412109).

It is a cyclic number.

It is not a de Polignac number, because 1221412103 - 2²⁴ = 1204634887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1221412109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610706051 + 610706052.

It is an arithmetic number, because the mean of its divisors is an integer number (610706052).

Almost surely, 2^1221412103 is an apocalyptic number.

1221412103 is a deficient number, since it is larger than the sum of its proper divisors (1).

1221412103 is an equidigital number, since it uses as much as digits as its factorization.

1221412103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1221412103 is about 34948.7067428825. The cubic root of 1221412103 is about 1068.9418318585.

Adding to 1221412103 its reverse (3012141221), we get a palindrome (4233553324).

The spelling of 1221412103 in words is "one billion, two hundred twenty-one million, four hundred twelve thousand, one hundred three".