1220050321 has 16 divisors (see below), whose sum is σ = 1456318080. Its totient is φ = 1000235520.

The previous prime is 1220050313. The next prime is 1220050331. The reversal of 1220050321 is 1230500221.

It is a cyclic number.

It is not a de Polignac number, because 1220050321 - 2³ = 1220050313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1220050295 and 1220050304.

It is not an unprimeable number, because it can be changed into a prime (1220050331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24640 + ... + 55201.

It is an arithmetic number, because the mean of its divisors is an integer number (91019880).

Almost surely, 2^1220050321 is an apocalyptic number.

It is an amenable number.

1220050321 is a deficient number, since it is larger than the sum of its proper divisors (236267759).

1220050321 is an equidigital number, since it uses as much as digits as its factorization.

1220050321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79944.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1220050321 is about 34929.2187287377. The cubic root of 1220050321 is about 1068.5444210629.

Adding to 1220050321 its reverse (1230500221), we get a palindrome (2450550542).

The spelling of 1220050321 in words is "one billion, two hundred twenty million, fifty thousand, three hundred twenty-one".