1220330011 has 4 divisors (see below), whose sum is σ = 1220403672. Its totient is φ = 1220256352.

The previous prime is 1220330009. The next prime is 1220330029. The reversal of 1220330011 is 1100330221.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1100330221 = 17627 ⋅62423.

It is a cyclic number.

It is not a de Polignac number, because 1220330011 - 2¹ = 1220330009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1220329973 and 1220330000.

It is not an unprimeable number, because it can be changed into a prime (1220330051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 915 + ... + 49411.

It is an arithmetic number, because the mean of its divisors is an integer number (305100918).

Almost surely, 2^1220330011 is an apocalyptic number.

1220330011 is a deficient number, since it is larger than the sum of its proper divisors (73661).

1220330011 is an equidigital number, since it uses as much as digits as its factorization.

1220330011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73660.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1220330011 is about 34933.2221674440. Note that the first 3 decimals coincide. The cubic root of 1220330011 is about 1068.6260675189.

Adding to 1220330011 its reverse (1100330221), we get a palindrome (2320660232).

The spelling of 1220330011 in words is "one billion, two hundred twenty million, three hundred thirty thousand, eleven".