1003220111 has 4 divisors (see below), whose sum is σ = 1004635800. Its totient is φ = 1001804424.

The previous prime is 1003220107. The next prime is 1003220161. The reversal of 1003220111 is 1110223001.

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 1003220111 - 2² = 1003220107 is a prime.

It is a super-2 number, since 2×1003220111² = 2012901182229704642, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1003220092 and 1003220101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1003220161) 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, 706781 + ... + 708198.

It is an arithmetic number, because the mean of its divisors is an integer number (251158950).

Almost surely, 2^1003220111 is an apocalyptic number.

1003220111 is a deficient number, since it is larger than the sum of its proper divisors (1415689).

1003220111 is an equidigital number, since it uses as much as digits as its factorization.

1003220111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1415688.

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

The square root of 1003220111 is about 31673.6501054110. The cubic root of 1003220111 is about 1001.0722202661.

Adding to 1003220111 its reverse (1110223001), we get a palindrome (2113443112).

The spelling of 1003220111 in words is "one billion, three million, two hundred twenty thousand, one hundred eleven".