1220111003 has 8 divisors (see below), whose sum is σ = 1230028800. Its totient is φ = 1210209768.

The previous prime is 1220110999. The next prime is 1220111017. The reversal of 1220111003 is 3001110221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1220111003 - 2² = 1220110999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220111033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174350 + ... + 181212.

It is an arithmetic number, because the mean of its divisors is an integer number (153753600).

Almost surely, 2^1220111003 is an apocalyptic number.

1220111003 is a deficient number, since it is larger than the sum of its proper divisors (9917797).

1220111003 is a wasteful number, since it uses less digits than its factorization.

1220111003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8281.

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

The square root of 1220111003 is about 34930.0873603259. The cubic root of 1220111003 is about 1068.5621362714.

Adding to 1220111003 its reverse (3001110221), we get a palindrome (4221221224).

The spelling of 1220111003 in words is "one billion, two hundred twenty million, one hundred eleven thousand, three".