1220104011 has 16 divisors (see below), whose sum is σ = 1890720000. Its totient is φ = 685384608.

The previous prime is 1220104007. The next prime is 1220104033. The reversal of 1220104011 is 1104010221.

It is a happy number.

1220104011 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1220104011 - 2² = 1220104007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1220104051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 491136 + ... + 493613.

It is an arithmetic number, because the mean of its divisors is an integer number (118170000).

Almost surely, 2^1220104011 is an apocalyptic number.

1220104011 is a deficient number, since it is larger than the sum of its proper divisors (670615989).

1220104011 is an equidigital number, since it uses as much as digits as its factorization.

1220104011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 984818.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1220104011 is about 34929.9872745468. The cubic root of 1220104011 is about 1068.5600950908.

Adding to 1220104011 its reverse (1104010221), we get a palindrome (2324114232).

The spelling of 1220104011 in words is "one billion, two hundred twenty million, one hundred four thousand, eleven".