1220530499 has 2 divisors, whose sum is σ = 1220530500. Its totient is φ = 1220530498.

The previous prime is 1220530477. The next prime is 1220530529. The reversal of 1220530499 is 9940350221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1220530499 - 2²⁸ = 952095043 is a prime.

It is not a weakly prime, because it can be changed into another prime (1220530429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610265249 + 610265250.

It is an arithmetic number, because the mean of its divisors is an integer number (610265250).

Almost surely, 2^1220530499 is an apocalyptic number.

1220530499 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220530499 is an equidigital number, since it uses as much as digits as its factorization.

1220530499 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 1220530499 is about 34936.0916388768. The cubic root of 1220530499 is about 1068.6845858348.

The spelling of 1220530499 in words is "one billion, two hundred twenty million, five hundred thirty thousand, four hundred ninety-nine".