1220550433 has 2 divisors, whose sum is σ = 1220550434. Its totient is φ = 1220550432.

The previous prime is 1220550431. The next prime is 1220550491. The reversal of 1220550433 is 3340550221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1220244624 + 305809 = 34932^2 + 553^2 .

It is an emirp because it is prime and its reverse (3340550221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1220550433 - 2¹ = 1220550431 is a prime.

Together with 1220550431, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1220550398 and 1220550407.

It is not a weakly prime, because it can be changed into another prime (1220550431) 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, 610275216 + 610275217.

It is an arithmetic number, because the mean of its divisors is an integer number (610275217).

Almost surely, 2^1220550433 is an apocalyptic number.

It is an amenable number.

1220550433 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220550433 is an equidigital number, since it uses as much as digits as its factorization.

1220550433 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 1220550433 is about 34936.3769300710. The cubic root of 1220550433 is about 1068.6904038084.

The spelling of 1220550433 in words is "one billion, two hundred twenty million, five hundred fifty thousand, four hundred thirty-three".