1220003311 has 2 divisors, whose sum is σ = 1220003312. Its totient is φ = 1220003310.

The previous prime is 1220003293. The next prime is 1220003359. The reversal of 1220003311 is 1133000221.

It is a weak prime.

It is an emirp because it is prime and its reverse (1133000221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1220003311 - 2¹⁷ = 1219872239 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1220003291 and 1220003300.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220003381) 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 as a sum of consecutive naturals, namely, 610001655 + 610001656.

It is an arithmetic number, because the mean of its divisors is an integer number (610001656).

Almost surely, 2^1220003311 is an apocalyptic number.

1220003311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220003311 is an equidigital number, since it uses as much as digits as its factorization.

1220003311 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1220003311 is about 34928.5457899409. The cubic root of 1220003311 is about 1068.5306967879.

Adding to 1220003311 its reverse (1133000221), we get a palindrome (2353003532).

The spelling of 1220003311 in words is "one billion, two hundred twenty million, three thousand, three hundred eleven".