1221434083 has 2 divisors, whose sum is σ = 1221434084. Its totient is φ = 1221434082.

The previous prime is 1221434033. The next prime is 1221434111. The reversal of 1221434083 is 3804341221.

It is an a-pointer prime, because the next prime (1221434111) can be obtained adding 1221434083 to its sum of digits (28).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1221434083 - 2²¹ = 1219336931 is a prime.

It is a super-2 number, since 2×1221434083² = 2983802438228101778, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1221434033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610717041 + 610717042.

It is an arithmetic number, because the mean of its divisors is an integer number (610717042).

Almost surely, 2^1221434083 is an apocalyptic number.

1221434083 is a deficient number, since it is larger than the sum of its proper divisors (1).

1221434083 is an equidigital number, since it uses as much as digits as its factorization.

1221434083 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 1221434083 is about 34949.0212023170. The cubic root of 1221434083 is about 1068.9482438905.

The spelling of 1221434083 in words is "one billion, two hundred twenty-one million, four hundred thirty-four thousand, eighty-three".