1220310011 has 4 divisors (see below), whose sum is σ = 1273366992. Its totient is φ = 1167253032.

The previous prime is 1220309983. The next prime is 1220310023. The reversal of 1220310011 is 1100130221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1220310011 - 2²² = 1216115707 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1220309974 and 1220310001.

It is not an unprimeable number, because it can be changed into a prime (1220310041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26528456 + ... + 26528501.

It is an arithmetic number, because the mean of its divisors is an integer number (318341748).

Almost surely, 2^1220310011 is an apocalyptic number.

1220310011 is a deficient number, since it is larger than the sum of its proper divisors (53056981).

1220310011 is an equidigital number, since it uses as much as digits as its factorization.

1220310011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53056980.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1220310011 is about 34932.9359058182. The cubic root of 1220310011 is about 1068.6202295795.

Adding to 1220310011 its reverse (1100130221), we get a palindrome (2320440232).

The spelling of 1220310011 in words is "one billion, two hundred twenty million, three hundred ten thousand, eleven".