1220404044203 has 4 divisors (see below), whose sum is σ = 1220412230208. Its totient is φ = 1220395858200.

The previous prime is 1220404044169. The next prime is 1220404044227. The reversal of 1220404044203 is 3024404040221.

It is a happy number.

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 1220404044203 - 2²⁰ = 1220402995627 is a prime.

It is a super-2 number, since 2×1220404044203² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220404040203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3865148 + ... + 4168953.

It is an arithmetic number, because the mean of its divisors is an integer number (305103057552).

Almost surely, 2^{1220404044203} is an apocalyptic number.

1220404044203 is a deficient number, since it is larger than the sum of its proper divisors (8186005).

1220404044203 is an equidigital number, since it uses as much as digits as its factorization.

1220404044203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8186004.

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 1220404044203 its reverse (3024404040221), we get a palindrome (4244808084424).

The spelling of 1220404044203 in words is "one trillion, two hundred twenty billion, four hundred four million, forty-four thousand, two hundred three".